@article{10_4171_ifb_198,
     author = {E. Vondenhoff},
     title = {Long-time asymptotics of {Hele{\textendash}Shaw} flow for perturbed balls with injection and suction},
     journal = {Interfaces and free boundaries},
     pages = {483--502},
     year = {2008},
     volume = {10},
     number = {4},
     doi = {10.4171/ifb/198},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/198/}
}