Asrori, A., S. Suparman, S. Wahyudi, і D. Widhiyanuriyawan. «An Experimental Study of Solar Cooker Performance With Thermal Concentrator System by Spot Fresnel Lens». Eastern-European Journal of Enterprise Technologies, т. 5, вип. 8 (107), Жовтень 2020, с. 31-41, doi:10.15587/1729-4061.2020.208638.