Avila, Anna; Queralt-Mitjans, Ignasi; Alarcón, Marta. (1997). «Mineralogical composition of African dust delivered by red rains over northeastern Spain» Journal of Geophysical Research 102: 21977–21996. doi:10.1029/97JD00485. Bibcode: 1997JGR...10221977A..
Avila, Anna; Queralt-Mitjans, Ignasi; Alarcón, Marta. (1997). «Mineralogical composition of African dust delivered by red rains over northeastern Spain» Journal of Geophysical Research 102: 21977–21996. doi:10.1029/97JD00485. Bibcode: 1997JGR...10221977A..