Rodziewicz T, Rajfur M. Numerical procedures and their practical application in PV modules’ analyses. Part II: Useful fractions and APE. Opto-Electron. Rev. [Internet]. 2019 Jun. 8 [cited 2026 Jun. 19];27(2):149-60. Available from: https://wydawnictwo.pan.pl/index.php/opelre/article/view/650