Naumenko, A. P., V. I. Borysuk, M. S. Iakhnenko, V. O. Gubanov, Y. L. Slominskii, and O. D. Kachkovsky. “Probing of Higher Excited States of Merocyanine Derivatives of Azaazulene and Indandione by Fluorescence Excitation Anisotropy Spectra”. Ukrainian Journal of Physics, vol. 65, no. 4, Apr. 2020, p. 321, doi:10.15407/ujpe65.4.321.