Asymptotics of the Nodal Lines of Solutions of 2-Dimensional Schrödinger Equations. M. Hoffmann-Ostenhof — 1988 Mathematische Zeitschrift
Interior Hölder estimates for solutions of Schrödinger equations and the regularity of nodal sets M. Hoffmann-Ostenhof; T. Hoffmann-Ostenhof; N. Nadirashvili — 1994 Journées équations aux dérivées partielles
Pointwise bounds on the asymptotics of spherically averaged L 2 -solutions of one-body Schrödinger equations M. Hoffmann-Ostenhof; T. Hoffmann-Ostenhof; Jörg Swetina — 1985 Annales de l'I.H.P. Physique théorique