@article{VTPMK_2015_1_a6,
     author = {M. S. Al-Nator and A. K. Kerimov},
     title = {Inhomogeneous efficient portfolios},
     journal = {Vestnik Tverskogo gosudarstvennogo universiteta. Seri\^a Prikladna\^a matematika},
     pages = {115--126},
     publisher = {mathdoc},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTPMK_2015_1_a6/}
}