@article{VUU_2021_31_3_a0,
     author = {A. T. Assanova and A. Zholamankyzy},
     title = {Problem with data on the characteristics for a loaded system of hyperbolic equations},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {353--364},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VUU_2021_31_3_a0/}
}