@article{KUIPM_1984_12_12_a9,
     author = {A. Ya. Chilap},
     title = {Optimal production of a three-layer oil stratum},
     journal = {Issledovaniya po Prikladnoi Matematike i Informatike},
     pages = {85--91},
     year = {1984},
     volume = {12},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUIPM_1984_12_12_a9/}
}