@incollection{JEDP_1994____A13_0, author = {Hoffmann-Ostenhof, M. and Hoffmann-Ostenhof, T. and Nadirashvili, N.}, title = {Interior {H\"older} estimates for solutions of {Schr\"odinger} equations and the regularity of nodal sets}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {13}, pages = {1--9}, publisher = {Ecole polytechnique}, year = {1994}, zbl = {0948.35501}, language = {en}, url = {http://archive.numdam.org/item/JEDP_1994____A13_0/} }