Self-adjoint and skew-symmetric extensions of the Laplacian with singular Robin boundary condition

Sergei A. Nazarov; Nicolas Popoff

Comptes Rendus. Mathématique, Volume 356 (2018) p. 927-932

Trapped modes supported by localized potentials in the zigzag graphene ribbon

Vladimir A. Kozlov; Sergei A. Nazarov; Anna Orlof

Comptes Rendus. Mathématique, Volume 354 (2016) p. 63-67