{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T04:21:03Z","timestamp":1750220463248,"version":"3.41.0"},"reference-count":4,"publisher":"Association for Computing Machinery (ACM)","issue":"9","license":[{"start":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T00:00:00Z","timestamp":1629763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Commun. ACM"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:p>Back-of-the-envelope calculations are a powerful professional practice.<\/jats:p>","DOI":"10.1145\/3473612","type":"journal-article","created":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T14:28:46Z","timestamp":1629815326000},"page":"35-37","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Back of the envelope"],"prefix":"10.1145","volume":"64","author":[{"given":"Peter J.","family":"Denning","sequence":"first","affiliation":[{"name":"Naval Postgraduate School in Monterey, CA"}]}],"member":"320","published-online":{"date-parts":[[2021,8,24]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/2986329"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.5555\/2738473"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/356733.356735"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1287\/opre.9.3.383"}],"container-title":["Communications of the ACM"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3473612","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3473612","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T20:48:14Z","timestamp":1750193294000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3473612"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,8,24]]},"references-count":4,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2021,9]]}},"alternative-id":["10.1145\/3473612"],"URL":"https:\/\/doi.org\/10.1145\/3473612","relation":{},"ISSN":["0001-0782","1557-7317"],"issn-type":[{"type":"print","value":"0001-0782"},{"type":"electronic","value":"1557-7317"}],"subject":[],"published":{"date-parts":[[2021,8,24]]},"assertion":[{"value":"2021-08-24","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}