Paulescu E, Paulescu M, Hategan S, Integration of spectral atmospheric transmittances. Parametric models for solar irradiance. In Spectral Characteristics of Solar Radiation, Applications in Photovoltaic Conversion, Elsevier (2025).
Bugler JW, The determination of hourly insolation on an inclinated plane using a diffuse irradiance model based on hourly measured global horizontal insolation, Solar Energy 19, (1977), 4 – 11.
Adnot J, Bourges B, Campana D, Gicquel R (1979) Utilisation des courbes de frequence cumulees pour le calcul des installation solaires. In Analise Statistique des Processus Meteorologiques Appliquee a l’Energie Solaire, Lestienne R. Paris, pp.9-40, (1979).
Sun X, Bright JM, Gueymard CA, Bai X, Acord B, Wang P, Worldwide performance assessment of 95 direct and diffuse clear-sky irradiance models using principal component analysis, Renewable and Sustainable Energy Reviews 135, (2021), 110087.
Goilean AG, Paulescu E, Paulescu M, A Physically Inspired Model for Estimating Clear-Sky Solar Irradiance, Annals of West University of Timisoara - Physics 66, (2024), 241-250.
Long CN, Ackerman TP, Identification of clear skies from broadband pyranometer measurements and calculation of downwelling shortwave cloud effects. Journal of Geophysical Research 105(D12), (2000), 15609–15626.
Gueymard CA. REST2: High-Performance solar radiation model for cloudless-sky irradiance, illuminance, and photosynthetically active radiation – validation with a benchmark dataset, Solar Energy 82, (2008), 272–285.