@article{GDZPPN00229950X, title = {On the Compactification of a Stein Surface.}, journal = {Mathematische Annalen}, volume = {179}, year = {1968}, pages = {221-224}, zbl = {0182.11102}, url = {http://dml.mathdoc.fr/item/GDZPPN00229950X} }
HOWARD, A. On the Compactification of a Stein Surface.. Mathematische Annalen, Tome 179 (1968) pp. 221-224. http://gdmltest.u-ga.fr/item/GDZPPN00229950X/