1. W. M. Schmidt, Diophantine Approximations [in Russian], Mir, Moscow (1983).
2. V. G. Zhuravlev, Karyon Continued Fractions, VlGU, Vladimir (2019).
3. V. G. Zhuravlev, "Local Pisot matrices and mutual approximations of algebraic numbers," Zap. Nauchn. Semin. POMI, 458, 104-134 (2017)
4. English transl., J. Math. Sci., 234, No. 5, 659-679 (2018).
5. V. G. Zhuravlev, “Diophantine approximations of linear forms,” Zap. Nauchn. Semin. POMI, this issue (2021).