@article{IVM_2014_6_a6,
     author = {S. I. Kalmykov and D. B. Karp},
     title = {On logarithmic concavity of series in gamma ratios},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {70--77},
     publisher = {mathdoc},
     number = {6},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2014_6_a6/}
}