@article{INTO_2019_173_a10,
     author = {V. I. Uskov},
     title = {Singular perturbations in first-order partial differential equations with matrix-differential operators},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {132--139},
     publisher = {mathdoc},
     volume = {173},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2019_173_a10/}
}