@article{EJDE_2001__2001__a9,
     author = {Berezansky,  Leonid and Domshlak,  Yury},
     title = {First-order differential equations with several deviating arguments: {Sturmian} comparison method in oscillation theroy: {I}},
     journal = {Electronic journal of differential equations},
     year = {2001},
     volume = {2001},
     zbl = {0982.34056},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2001__2001__a9/}
}