@article{IM2_2012_76_6_a6,
     author = {V. P. Kurdyumov and A. P. Khromov},
     title = {Riesz bases of eigenfunctions of integral operators with kernels discontinuous on the diagonals},
     journal = {Izvestiya. Mathematics },
     pages = {1175--1189},
     publisher = {mathdoc},
     volume = {76},
     number = {6},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2012_76_6_a6/}
}