@article{VMUMM_1989_2_a19,
     author = {R. \`E. Mirzakhanyan},
     title = {The completed iterated hyperspace functor},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {75--77},
     publisher = {mathdoc},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_2_a19/}
}