@article{VMP_2013_14_4_a11,
     author = {G. M. Agayan and Vad. V. Voevodin and S. Yu. Romanov},
     title = {Applicability of stratified models for solving problems of three-dimensional ultrasonic tomography},
     journal = {Numerical methods and programming},
     pages = {533--542},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2013_14_4_a11/}
}