@article{1028989871, author = {Griffiths, H. B.}, title = {A contribution to the theory of manifolds.}, journal = {Michigan Math. J.}, volume = {2}, number = {1}, year = {1953}, pages = { 61-89}, language = {en}, url = {http://dml.mathdoc.fr/item/1028989871} }
Griffiths, H. B. A contribution to the theory of manifolds.. Michigan Math. J., Tome 2 (1953) no. 1, pp. 61-89. http://gdmltest.u-ga.fr/item/1028989871/