@article{05663791,
title = {On proper R-actions on hyperbolic Stein surfaces.},
journal = {Documenta Mathematica},
volume = {14},
year = {2009},
pages = {673-689},
zbl = {1185.32007},
language = {en},
url = {http://dml.mathdoc.fr/item/05663791}
}
Miebach, Christian; Oeljeklaus, Karl. On proper R-actions on hyperbolic Stein surfaces.. Documenta Mathematica, Tome 14 (2009) pp. 673-689. http://gdmltest.u-ga.fr/item/05663791/