@article{ZNSL_1974_46_a6,
     author = {A. I. Skopin},
     title = {On the collecting formule},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {59--63},
     publisher = {mathdoc},
     volume = {46},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_46_a6/}
}