@article{FPM_1995_1_3_a4,
     author = {E. I. Ganzha},
     title = {The main series of nonhomogeneous systems of hydrodynamic type with constant matrices possessing $1^{st}$ order conservation laws},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {641--648},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1995_1_3_a4/}
}