{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T14:39:44Z","timestamp":1777646384873,"version":"3.51.4"},"reference-count":0,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2000,1,1]],"date-time":"2000-01-01T00:00:00Z","timestamp":946684800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fundamenta Informaticae"],"published-print":{"date-parts":[[2000,2]]},"abstract":"<jats:p>A membrane computing system (also called P system) consists of computing cells which are organized hierarchically by the inclusion relation: cells may include cells, which again may include cells, etc. Each cell is enclosed by its membrane. Each cell is an independent computing agent with its own computing program, which produces objects. The interaction between cells consists of the exchange of objects through membranes. The output of a computation is a partially ordered set of objects which leave the system through its external membrane. The fundamental properties of computations in such P systems with external output are investigated. These include the computing power, normal forms, and basic decision problems.<\/jats:p>","DOI":"10.3233\/fi-2000-41304","type":"journal-article","created":{"date-parts":[[2019,12,2]],"date-time":"2019-12-02T22:04:04Z","timestamp":1575324244000},"page":"313-340","source":"Crossref","is-referenced-by-count":26,"title":["Membrane Computing with External Output"],"prefix":"10.1177","volume":"41","author":[{"given":"Gheorghe","family":"P\u0103un","sequence":"first","affiliation":[{"name":"Institute of Mathematics of the Romanian Academy, PO Box 1 \u2013 764, 70700 Bucure\u015fti, Romania. E-mail: gpaun@imar.ro"}]},{"given":"Grzegorz","family":"Rozenberg","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Leiden University, PO Box 9512, 2300 RA Leiden, The Netherlands. E-mail: rozenber@wi.leidenuniv.nl"}]},{"given":"Arto","family":"Salomaa","sequence":"additional","affiliation":[{"name":"Turku Center for Computer Science \u2013 TUCS, Lemminkaisenkatu 14 A, 4th floor, 20520 Turku, Finland. E-mail: asalomaa@utu.fi"}]}],"member":"179","published-online":{"date-parts":[[2000,1,1]]},"container-title":["Fundamenta Informaticae"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-2000-41304","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-2000-41304","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T06:35:05Z","timestamp":1777444505000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.3233\/FI-2000-41304"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,1,1]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2000,2]]}},"alternative-id":["10.3233\/FI-2000-41304"],"URL":"https:\/\/doi.org\/10.3233\/fi-2000-41304","relation":{},"ISSN":["0169-2968","1875-8681"],"issn-type":[{"value":"0169-2968","type":"print"},{"value":"1875-8681","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,1,1]]}}}