Temperature Dependences of Single Dye-Molecules Zero-Phonon Line Widths in a Broad Range of Low TemperaturesI. Yu. Eremchev, A.A. Gorshelev, K.R. Karimullin and A.V. NaumovEPJ Web of Conferences, 103 (2015) 05002DOI: https://doi.org/10.1051/epjconf/201510305002