@article{10_1090_S0894_0347_01_00372_1,
     author = {Angenent, S. and Aronson, D.},
     title = {Non-axial self-similar hole filling for the porous medium equation},
     journal = {Journal of the American Mathematical Society},
     pages = {737--782},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2001},
     doi = {10.1090/S0894-0347-01-00372-1},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-01-00372-1/}
}