Investigation of the solar cell materials Cu(In,Ga)Se2 and Cu2ZnSnS4 with muon spin spectroscopy and density-functional calculationsVilao, Rui C.; Marinopoulos, Apostolos G.; dos Santos, Diego Garcia; Alberto, Helena Vieira; Gil, Joao Campos; Mengyan, Patrick W.; Kauk-Kuusik, Marit; Lord, James; Weidinger, AloisJournal of applied physics2024 / art. 055704 https://doi.org/10.1063/5.0205837 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Processing and properties of bulk ultrafine-grained pure niobiumKommel, Lembit; Kimmari, Eduard; Saarna, Mart; Viljus, MartJournal of materials science2013 / p. 4723-4729 : ill https://doi.org/10.1007/s10853-013-7210-3 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS