Current Publication Frequency:Irregular Former Publication Frequency:Monthly(-<Aug. 1996>) Print began in 1975 "International journal on ecological modelling and engineering and systems ecology." License restrictions may limit access Mode of access: World Wide Web Vol. 92, issue 1 (Nov. 21, 1996); title from introductory page, viewed September 17, 2002 Vol. 156, issue 2-3 (Nov. 1, 2002)