Hamana, K; et al. (1998). "Unusual polyamines in aquatic plants: the occurrence of homospermidine, norspermidine, thermospermine, norspermine, aminopropylhomospermidine, bis(aminopropyl)ethanediamine, and methylspermidine". Can. J. Bot. 76 (1): 130–133. doi:10.1139/cjb-76-1-130.
Yamamoto, S; et al. (Apr 27, 1979). "Occurrence of norspermidine in some species of genera Vibrio and Beneckea". Biochem Biophys Res Commun. 87 (4): 1102–1108. doi:10.1016/S0006-291X(79)80021-2. PMID313792.
Sunkara, PS; et al. (1988). "Mechanism of antitumor activity of norspermidine, a structural homologue of spermidine". Adv Exp Med Biol. 250: 707–716. doi:10.1007/978-1-4684-5637-0_62. PMID3255245.
Yamamoto, S; et al. (Apr 27, 1979). "Occurrence of norspermidine in some species of genera Vibrio and Beneckea". Biochem Biophys Res Commun. 87 (4): 1102–1108. doi:10.1016/S0006-291X(79)80021-2. PMID313792.
Hamana, K; Matsuzaki, S (1982). "Widespread Occurrence of Norspermidine and Norspermine in Eukaryotic Algae". J. Biochem. 91 (4): 1321–1328. ISSN0021-924X. PMID7096289.
Prakash, NJ; et al. (1988). "Antitumor activity of norspermidine, a structural homologue of the natural polyamine spermidine". Anticancer Res. 8 (4): 563–568. PMID3140710.
Sunkara, PS; et al. (1988). "Mechanism of antitumor activity of norspermidine, a structural homologue of spermidine". Adv Exp Med Biol. 250: 707–716. doi:10.1007/978-1-4684-5637-0_62. PMID3255245.
Hamana, K; Matsuzaki, S (1982). "Widespread Occurrence of Norspermidine and Norspermine in Eukaryotic Algae". J. Biochem. 91 (4): 1321–1328. ISSN0021-924X. PMID7096289.