@article{MM_1997_9_4_a5,
     author = {S. V. Baykov and T. A. Tikhonova},
     title = {Image formation in broad wide-angle acoustic objective},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {68--76},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1997_9_4_a5/}
}