Hibi, N., Fujita, T., Hatano, M., Hashimoto, T., & Yamada, Y. (1992). Putrescine N-Methyltransferase in Cultured Roots of Hyoscyamus albus: N-Butylamine as a Potent Inhibitor of the Transferase both in Vitro and in Vivo.

Hibi, Naruhiro, Toshihiro Fujita, Mika Hatano, Takashi Hashimoto, i Yasuyuki Yamada. Putrescine N-Methyltransferase in Cultured Roots of Hyoscyamus Albus: N-Butylamine As a Potent Inhibitor of the Transferase Both in Vitro and in Vivo. 1992.

Hibi, Naruhiro, et al. Putrescine N-Methyltransferase in Cultured Roots of Hyoscyamus Albus: N-Butylamine As a Potent Inhibitor of the Transferase Both in Vitro and in Vivo. 1992.