實物特徵
出版:Began with vol. 1, núm. 1 (enero de 1990).
出版頻率:Semiannual
格式: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.
訪問:License restrictions may limit access.