As soon as i found out, the following reference (Hill, M.O. & Gauch, Jr.H.G. (1980) Detrended Correspondence Analysis: an improved ordination technique. Vegetation 42: 47-58) is mostly written as a journal article but the following link demonstrated sth else
https://link.springer.com/book/10.1007/978-94-009-9197-2#toc
now i think this is a symposium not a part of a journal. are you agreeing with me?
Regards