@article{1183524266, author = {Green, L. W.}, title = {Spectra of nilflows}, journal = {Bull. Amer. Math. Soc.}, volume = {67}, number = {6}, year = {1961}, pages = { 414-415}, language = {en}, url = {http://dml.mathdoc.fr/item/1183524266} }
Green, L. W. Spectra of nilflows. Bull. Amer. Math. Soc., Tome 67 (1961) no. 6, pp. 414-415. http://gdmltest.u-ga.fr/item/1183524266/