@article{CHFMJ_2021_6_4_a1,
     author = {F.T. Bogatyreva},
     title = {Boundary value problems for a first order
},
     journal = {\v{C}el\^abinskij fiziko-matemati\v{c}eskij \v{z}urnal},
     pages = {403--416},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHFMJ_2021_6_4_a1/}
}