Bogoliubov М. М. (jr.), ., Mykytiuk , I. V., Fil' В. M., & Prykarpatsky A. К. (1992). Canonical-quantization for classical dynamic Neuman-type systems in frames of the Moser spectral approach. Ukrains’kyi Matematychnyi Zhurnal, 44(7), 913-922. https://umj.imath.kiev.ua/index.php/umj/article/view/8123