R.М. Makhmudov, Z.I.Kholmurodova, Sh.А.Usmonov, and S.Sh.Babanazarov. “Efficient Principles for Heat Batteries”. International Journal on Orange Technologies, Vol. 2, no. 12, Dec. 2020, pp. 14-17, doi:10.31149/ijot.v2i12.1005.