ANNALES DE L'INSTITUT FOURIER

On nodal sets and nodal domains on ${\mathbf{S}}^{\mathbf{2}}$ and ${ℝ}^{\mathbf{2}}$

Eremenko, Alexandre; Jakobson, Dmitry; Nadirashvili, Nikolai

Annales de l'Institut Fourier, Volume 57 (2007) no. 7 p. 2345-2360