@article{DAN_1992_324_4_a8,
     author = {Chan Khyu Bong},
     title = {On the {Fredholm} property of linear functional-differential},
     journal = {Doklady Akademii Nauk},
     pages = {757--759},
     publisher = {mathdoc},
     volume = {324},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_324_4_a8/}
}