L. Wu, T. Reichert, T.P.I. Saragi, T. Fuhrmann-Lieker, J. Salbeck, Synthesis, Properties, and Application of Novel Spirocondensed Dithienogermoles, Blucher Chemistry Proceedings, Volume 1, 2013, Pages 11-11, ISSN 23184043, http://dx.doi.org/10.5151/chempro-15bmos-BMOS2013_20139137634 (www.proceedings.blucher.com.br/article-details/synthesis-properties-and-application-of-novel-spirocondensed-dithienogermoles-8231) Palavras-chave:: ;