@article{IM2_1989_33_2_a5,
     author = {V. M. Millionshchikov},
     title = {Behavior of conditional stability under a~change of the parameters},
     journal = {Izvestiya. Mathematics },
     pages = {331--354},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a5/}
}