@article{AL_1984_23_6_a1,
     author = {I. I. Eremin},
     title = {Questions of duality for improper problems of mathematical},
     journal = {Algebra i logika},
     pages = {624--636},
     publisher = {mathdoc},
     volume = {23},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1984_23_6_a1/}
}