Szymanek, P. “Numerical Modeling of the Influence of Flat Solar Collector Design on Its Thermal Efficiency With the Use of Fractional Calculus”. Acta Physica Polonica A ISSN 1898-794X , vol. 144, no. 5, Dec. 2023, p. 367, https://doi.org/10.12693/APhysPolA.144.367.