@article{VMP_2020_21_1_a1,
     author = {A. V. Blank and N. A. Sukhareva},
     title = {Spatial differential analysis of the intensity distribution for a collimated wave beam},
     journal = {Numerical methods and programming},
     pages = {13--26},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2020_21_1_a1/}
}