Tina Uhlig, Christian Fengler, Andreas Seifert, Florian Taubert, Lysann Kaßner, Hans-Joachim Hähnle, Christoph Hamers, Manfred Wilhelm, Stefan Spange, and Michael Sommer. Reversible and Stable Hemiaminal Hydrogels from Polyvinylamine and Highly Reactive and Selective Bis(N-acylpiperidone)s. ACS Macro Lett. 2021, 10, 3, 389–394. doi:10.1021/acsmacrolett.0c00904.
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Kost, A. N.; Golubeva, G. A.; Stepanov, R. G. Reactions of hydrazine derivatives. XXXIII. Synthesis of 1,3-diamines by hydrogenolysis of pyrazolines. Source Zhurnal Obshchei Khimii, 1962. 32. 2240-2244. ISSN0044-460X.