Admittance of organic LED structures with an emission YAK-203 layer / A. V. Voytsekhovskii, S. N. Nesmelov, S. M. Dzyadukh [et al.] // Russian physics journal. 2019. Vol. 62, № 2. P. 306-313. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000721257