@article{VMUMM_1996_2_a17,
     author = {Sh. G. Bagyrov},
     title = {On the existence of a positive solution of second-order parabolic equations with time-periodic coefficients},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {86--89},
     publisher = {mathdoc},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1996_2_a17/}
}