1. M. Karasev, “Noncommutative algebras, nano-structures, and quantum dynamics generated by resonances. II,” Adv. Stud. Contemp. Math. 11 (1) 33–56 (2005).
2. M. V. Karasev and E. M. Novikova, “Algebra and quantum geometry of multifrequency resonance,” Izv Ross. Akad. Nauk Ser. Mat. 74 (6), 55–106 (2010) [Izv. Math 74 (6), 1155-1204 (2010)].
3. E. M. Novikova “Minimal basis of the symmetry algebra for three-frequency resonance,” Russ. J. Math. Phys. 16 (4) 518–528 (2009).
4. M. V. Karasev and E. M. Novikova, “Algebra of symmetries of three-frequency resonance: reduction of a reducible case to an irreducible case,” Math. Notes 104 (6), 45–59 (2018).
5. M. V. Karasev and E. M. Novikova, “Secondary resonances in Penning traps. Non-Lie symmetry algebras and quantum states,” Russ. J. Math. Phys. 20 (3), 283–294 (2013).