Faiman, D.D.FaimanKarnieli, A.A.KarnieliNinari, N.N.NinariMelnichak, V.V.MelnichakKarki, I.I.KarkiBett, Andreas W.Andreas W.BettSiefer, GeraldGeraldSieferBorg, N. van derN. van derBorgBurgers, A.R.A.R.BurgersDunlop, Ewan D.Ewan D.Dunlop2022-03-092022-03-092003https://publica.fraunhofer.de/handle/publica/3419612-s2.0-6344292627en621697Measurement and comparison of the ratio, of the direct beam to normal hemispherical solar spectra, in various parts of the worldconference paper