Gabovich В., Pokrovsky В., Demianenko Є., and Grebenyuk А. “Experimental and Theoretical Studies of Laser Desorption/Ionization of Methylene Blue from the Surface of Thermally Exfoliated Graphite”. Ukrainian Journal of Physics, vol. 57, no. 7, July 2012, p. 773, doi:10.15407/ujpe57.7.773.