{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T11:33:11Z","timestamp":1775561591491,"version":"3.50.1"},"reference-count":34,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","issue":"2","license":[{"start":{"date-parts":[[2019,6,1]],"date-time":"2019-06-01T00:00:00Z","timestamp":1559347200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/IEEE.html"},{"start":{"date-parts":[[2019,6,1]],"date-time":"2019-06-01T00:00:00Z","timestamp":1559347200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2019,6,1]],"date-time":"2019-06-01T00:00:00Z","timestamp":1559347200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Systems Journal"],"published-print":{"date-parts":[[2019,6]]},"DOI":"10.1109\/jsyst.2019.2904933","type":"journal-article","created":{"date-parts":[[2019,4,4]],"date-time":"2019-04-04T19:03:13Z","timestamp":1554404593000},"page":"1936-1944","source":"Crossref","is-referenced-by-count":5,"title":["Estimation of the Belonging Metric in a Hypothetical\u00a0System-of-Systems"],"prefix":"10.1109","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7714-6599","authenticated-orcid":false,"given":"Wilson N.","family":"Felder","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6904-1415","authenticated-orcid":false,"given":"W. Clifton","family":"Baldwin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref33","first-page":"209","article-title":"On the origin of the flocking habit of migratory birds","volume":"84","author":"trowbridge","year":"1914","journal-title":"Popular Sci"},{"key":"ref32","doi-asserted-by":"publisher","DOI":"10.2307\/4512025"},{"key":"ref31","doi-asserted-by":"publisher","DOI":"10.2307\/4086847"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1038\/nature12939"},{"key":"ref34","doi-asserted-by":"publisher","DOI":"10.1111\/j.1474-919X.1998.tb04390.x"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1162\/artl.2008.14.2.179"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1006\/jtbi.2003.3191"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.2527\/1998.76102596x"},{"key":"ref13","first-page":"36-1","article-title":"The use of aircraft wakes to achieve power reductions in formation flight","author":"hummel","year":"0","journal-title":"AGARD Conf Proc CP-584"},{"key":"ref14","doi-asserted-by":"crossref","first-page":"1003","DOI":"10.1126\/science.168.3934.1003","article-title":"Formation flight of birds","volume":"168","author":"lissaman","year":"1970","journal-title":"Science"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.2307\/5976"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.2514\/4.867538"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-249405-5.50009-4"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1016\/j.anbehav.2009.07.007"},{"key":"ref19","author":"ehrlich","year":"1988","journal-title":"Birder's Handbook"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1016\/j.ecolmodel.2006.04.023"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1504\/IJISE.2011.043140"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1515\/9781400850624"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-38756-7_1"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/SYSOSE.2011.5966586"},{"key":"ref29","article-title":"The minimum induced drag of aerofoils","author":"munk","year":"1923"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/TSMCA.2011.2164522"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1145\/37402.37406"},{"key":"ref7","article-title":"Systems engineering guide for systems of systems","year":"2008"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/SYSOSE.2006.1652284"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.2514\/6.2003-608"},{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1520-6858(1998)1:4<267::AID-SYS3>3.0.CO;2-D"},{"key":"ref20","first-page":"494","article-title":"The vee formation of Canada geese","volume":"91","author":"gould","year":"1974","journal-title":"The Auk Ornithological Advances"},{"key":"ref22","first-page":"225","article-title":"Beitrag zur erkl&#x00E4;rung des winkelfluges einiger zugv&#x00F6;gel","volume":"5","author":"wieselsberger","year":"1914","journal-title":"Z Flugtech U Mot"},{"key":"ref21","first-page":"48","article-title":"&#x00DC;ber die ursachen des formationsfluges","volume":"16","author":"franzisket","year":"1951","journal-title":"Vogelwarte"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1038\/35099670"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1038\/282778a0"},{"key":"ref26","author":"wilensky","year":"1999","journal-title":"NetLogo"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1093\/imamat\/68.5.441"}],"container-title":["IEEE Systems Journal"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/4267003\/8727580\/08681605.pdf?arnumber=8681605","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,7,13]],"date-time":"2022-07-13T20:57:33Z","timestamp":1657745853000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/8681605\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,6]]},"references-count":34,"journal-issue":{"issue":"2"},"URL":"https:\/\/doi.org\/10.1109\/jsyst.2019.2904933","relation":{},"ISSN":["1932-8184","1937-9234","2373-7816"],"issn-type":[{"value":"1932-8184","type":"print"},{"value":"1937-9234","type":"electronic"},{"value":"2373-7816","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,6]]}}}