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@article{IVM_1971_10_a9, author = {B. K. Khlybov}, title = {The $p$-density of sets on the line}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {70--75}, publisher = {mathdoc}, number = {10}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_10_a9/} }
B. K. Khlybov. The $p$-density of sets on the line. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1971), pp. 70-75. http://geodesic.mathdoc.fr/item/IVM_1971_10_a9/