http://www.erowid.org/library/books_online/pihkal/pihkal128.shtml (http://www.erowid.org/library/books_online/pihkal/pihkal128.shtml)
Post 183318 (https://www.thevespiary.org/talk/index.php?topic=11270.msg18331800#msg18331800)
(blue: "lets talk about Phen-butyl-amines", Novel Discourse)http://www.geocities.com/dritte123/PSPF.html (http://www.geocities.com/dritte123/PSPF.html)