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@article{JRAM_1988__390_153060, author = {Sigurd Angenent}, title = {The zero set of a solution of a parabolic equation.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {79--96}, publisher = {mathdoc}, volume = {390}, year = {1988}, zbl = {0644.35050}, url = {http://geodesic.mathdoc.fr/item/JRAM_1988__390_153060/} }
Sigurd Angenent. The zero set of a solution of a parabolic equation.. Journal für die reine und angewandte Mathematik, Tome 390 (1988), pp. 79-96. http://geodesic.mathdoc.fr/item/JRAM_1988__390_153060/