@article{MS2_1979__44_166657,
     author = {Gustaf Gripenberg},
     title = {On the asymptotic behaviour of nonlinear contraction semigroups.},
     journal = {Mathematica Scandinavica},
     pages = {385--397},
     publisher = {mathdoc},
     volume = {44},
     year = {1979},
     zbl = {0428.47040},
     url = {http://geodesic.mathdoc.fr/item/MS2_1979__44_166657/}
}