@article{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},
     journal = {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://www.numdam.org/item/JEDP_1994____A13_0/}
}