Borovskij, Yu. E. Korrespondenzen über einer beliebigen Kategorie. (Russian) Zbl 0269.18001 Sib. Mat. Zh. 14, 484-497 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 18A99 General theory of categories and functors PDFBibTeX XMLCite \textit{Yu. E. Borovskij}, Sib. Mat. Zh. 14, 484--497 (1973; Zbl 0269.18001)