@article{DAN_1958_120_2_a6,
     author = {M. L. Rasulov},
     title = {A formula for the expansion of an arbitrary function into a series of fundamental functions in a certain class of 
},
     journal = {Doklady Akademii Nauk},
     pages = {252--255},
     publisher = {mathdoc},
     volume = {120},
     number = {2},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_2_a6/}
}