@book{10558726,
	author = {Vtjurin, A. N.},
	title = {Raman scattering on acoustic and soft modes in incommensurate ferroelectric thiourea},
	publisher = {L. V. Kirensky inst. of physics},
	year = {1992},
	series = {Preprint},
	address = {Krasnoyarsk}
}