Solid-state active media of tunable organic- compound lasers pumped with a laser. II. A copper vapor laser / T. N. Kopylova, V. B. Sukhanov, G. V. Mayer [et.al.] // Applied physics B: Lasers and optics. 2002. Vol. 74, № 6. P. 545-547. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000396850