Esina, A. I., & Shafarevich, A. I. (2014). SEMICLASSICAL ASYMPTOTICS OF EIGENVALUES FOR NON-SELFADJOINT OPERATORS AND QUANTIZATION CONDITIONS ON RIEMANN SURFACES. Acta Polytechnica, 54(2), 101–105. https://doi.org/10.14311/AP.2014.54.0101