1. Abdel-Monem, A., Watkins, N. D., and Gast, P. W., 1967a, K-Ar geochronology and paleomagnetic studies of the volcanism on the Canary Islands, (abs.): Geol. Soc. Am., 1967 Meeting, New Orleans.
2. Abdel-Monem, A., Watkins, N. D., and Gast, P. W., 1967b, Volcanic history of the Canary Islands, (abs.): Am. Geophys. Union Trans., v. 48, p. 226–227.
3. Abdel-Monem, A., Watkins, N. D., and Gast, P. W., 1968, Volcanic stratigraphy and magnetic history of the Canary Islands and Madeira, (abs.): Intern. Sympos. Volcanol., Tenerife, Sept. 1968, p. 1.
4. Abdel-Monem, A., Watkins, N. D., and Gast, P. W., 1971, Potassium-argon ages, volcanic stratigraphy, and geomagnetic polarity history of the Canary Islands: Lanzarote, Fuerteventura, Gran Canaria, and La Gomera: Am. J. Sci., v. 271, p. 490–521.
5. Agard, J., 1960, Les carbonatites et les roches à silicates et carbonates associés du massif de roches alcalines du Tamazert (Haut-Atlas de Midelt, Maroc) et les problèmes de leur genèse: Rep. 21th Sess. Intern. Geol. Congr., Copenhagen, v. 13, p. 293–309.