Authors: Zhevandrov, P Merzon, A

Citation: P. Zhevandrov et A. Merzon, On the neumann problem for the Helmholtz equation in a plane angle, MATH METH A, 23(16), 2000, pp. 1401-1446

Authors: Zhevandrov, P Alcantar, E

Citation: P. Zhevandrov et E. Alcantar, Singular boundary perturbations for some eigenvalue problems, J MATH PHYS, 41(5), 2000, pp. 3283-3289