For citations:
Rakhmanov S.Z., Karpova O.V., Khashimova F.S., Eshchanov B.Kh. High harmonic generation by an atom confined in nanoscale cavity. Nanosystems: Physics, Chemistry, Mathematics. 2020;11(3):307–313. https://doi.org/10.17586/2220-8054-2020-11-3-307-313