@article{ZNSL_1980_102_a1,
     author = {A. S. Ivanov},
     title = {On services organization},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {19--26},
     year = {1980},
     volume = {102},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_102_a1/}
}