2 citations to https://www.mathnet.ru/rus/tm996

1. Asselle L., Benedetti G., “Normal Forms For Strong Magnetic Systems on Surfaces: Trapping Regions and Rigidity of Zoll Systems”, Ergod. Theory Dyn. Syst., 42:6 (2022), PII S0143385721000110, 1871–1897    
2. Raymond N., San Vu Ngoc, “Geometry and Spectrum in 2D Magnetic Wells”, Ann. Inst. Fourier, 65:1 (2015), 137–169