@article{GDZPPN002067021, title = {A non-immersion theorem for spaceforms.}, journal = {Commentarii mathematici Helvetici}, volume = {63}, year = {1988}, pages = {672-674}, zbl = {0655.53049}, url = {http://dml.mathdoc.fr/item/GDZPPN002067021} }
Pedit, F.J. A non-immersion theorem for spaceforms.. Commentarii mathematici Helvetici, Tome 63 (1988) pp. 672-674. http://gdmltest.u-ga.fr/item/GDZPPN002067021/