Passerini
Bollettino Scientifico della Facolta di Chimica Industriale di Bologna, 1951 , vol. 9, p. 1

Gen. Aniline Works
Patent: US1936721 , 1932 ;

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I. G. Farbenind.
Patent: DE562824 , 1931 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 19, p. 692

Cadogan,J.I.G. et al.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1976 , p. 1749 - 1757