Amenson Gomes, Silvio Cunha, Bismuth-Catalyzed Synthesis of Macrocyle Bisguanidines, Blucher Chemistry Proceedings, Volume 1, 2013, Pages 333-333, ISSN 23184043, http://dx.doi.org/10.5151/chempro-14bmos-R0333-2 (www.proceedings.blucher.com.br/article-details/bismuth-catalyzed-synthesis-of-macrocyle-bisguanidines-8156) Palavras-chave:: ;