@article{LJM_1998_1_a0,
     author = {Yu. E. Hohlov and D. V. Prokhorov and A. Yu. Vasil'ev},
     title = {On geometrical properties of free boundaries in the {Hele{\textendash}Shaw} flows moving boundary problem},
     journal = {Lobachevskii journal of mathematics},
     pages = {3--12},
     year = {1998},
     volume = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_1998_1_a0/}
}