@article{Masalov:2004,
	author = {A. V. Masalov},
	title = {Progress in Optics: encyclopedia of modern optics},
	publisher = {Physics-Uspekhi},
	year = {2004},
	journal = {Phys. Usp.},
	volume = {47},
	number = {1},
	pages = {103-103},
	url = {https://ufn.ru/en/articles/2004/1/h/},
	doi = {10.1070/PU2004v047n01ABEH001795}
}