@article{IM2_1996_60_6_a0,
     author = {S. I. Agafonov and E. V. Ferapontov},
     title = {Systems of conservation laws in the context of the projective theory of congruences},
     journal = {Izvestiya. Mathematics },
     pages = {1097--1122},
     publisher = {mathdoc},
     volume = {60},
     number = {6},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1996_60_6_a0/}
}