2 citations to https://www.mathnet.ru/rus/arnmj1
  1. Ralph M. Kaufmann, Sergei Khlebnikov, Birgit Wehefritz–Kaufmann, “Local models and global constraints for degeneracies and band crossings”, Journal of Geometry and Physics, 158 (2020), 103892  crossref
  2. G. Khimshiashvili, “Remarks on Quadratic Mappings”, J Math Sci, 237:1 (2019), 135  crossref