@article{FPM_2001_7_1_a20,
     author = {Yu. T. Sil'chenko},
     title = {Linear differential equation with non-densely defined operator coefficient, generating a~non-analytical semigroup},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {295--300},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2001_7_1_a20/}
}