@article{MZM_1995_57_6_a9,
     author = {\'E. B. Bykhovskii},
     title = {On~strong evolution inequalities for the equations $u_{tt}=a(t)u_{xx}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {913--916},
     publisher = {mathdoc},
     volume = {57},
     number = {6},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_57_6_a9/}
}