@article{1077311041, author = {Renggli, H.}, title = {Structural instability and extensions of Riemann surfaces}, journal = {Duke Math. J.}, volume = {42}, number = {1}, year = {1975}, pages = { 211-224}, language = {en}, url = {http://dml.mathdoc.fr/item/1077311041} }
Renggli, H. Structural instability and extensions of Riemann surfaces. Duke Math. J., Tome 42 (1975) no. 1, pp. 211-224. http://gdmltest.u-ga.fr/item/1077311041/