@article{IM2_2005_69_4_a2,
     author = {V. V. Kornev and A. P. Khromov},
     title = {Absolute convergence of expansions in~eigen- and adjoint functions of 
},
     journal = {Izvestiya. Mathematics },
     pages = {703--717},
     publisher = {mathdoc},
     volume = {69},
     number = {4},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2005_69_4_a2/}
}