PACS:42.65.Yj, 42.65.Re, 42.65.An (all) DOI:10.1070/PU1986v029n09ABEH003501 URL: https://ufn.ru/en/articles/1986/9/c/ Citation: Piskarskas A, Stabinis A, Yankauskas A "Phase phenomena in parametric amplifiers and generators of ultrashort light pulses" Sov. Phys. Usp.29 869–879 (1986)