B. Pastakkaya, N. Yamankaradeniz, O. Kaynakli, S. Coskun, and R. Yamanakaradeniz, “Experimental analysis of a solar absorption system with interior energy storage”, J. energy South. Afr., vol. 23, no. 2, pp. 39–49, May 2012, doi: 10.17159/2413-3051/2012/v23i2a3161.