Johnson T.C, Kelts K., Odada E.O.  2000.  The Holocene history of Lake Victoria, East Africa. Ambio. 29:2-11.

Valero-Garces B.L, Delgado-Huertas A., Navas A., Machin J., Gonzalez-Samperiz P., Kelts K..  2000.  Quaternary palaeohydrological evolution of a playa lake: Salada Mediana, central Ebro Basin, Spain. Sedimentology. 47(6):1135-1156.

Valerol-Garces B.L, Zeroual E., Kelts K..  1998.  Arid phases in the western Mediterranean region during the last glacial cycle reconstructed from Lacustrine records. Paleohydrology and Environmental Change. :67-80.

Valero-Garces B.L, C. Bono M, Kelts K..  1998.  Geoforma Ediciones, Logrono, Barcelona. Investigaciones recientes de la Geomorfologia esponola.