Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212 Mode of access: World Wide Web.
Refereed/Peer-reviewed Some numbers issued in combined form. Electronic reproduction. [Place of publication not identified] : HathiTrust Digital Library, 2010. Vol. 1, no. 1 (spring 1989); title from PDF article header (SpringerLink, viewed May 9, 2012). Vol. 31, issue 2 (Aug. 2019) (viewed August 16, 2019).