P. M. Shrestha, S. P. Gupta, U. Joshi, N. P. Chapagain, I. B. Karki, and K. N. Poudyal, “Estimation of Direct Solar Radiation on High Mountain Region, Jomson, Nepal”, Patan Prospective J., vol. 2, no. 1, pp. 221–231, Sep. 2022.