1. Magnetic and some thermal properties of chalcogenides of Pr and Tm and a few other rare earths
2. P. Wachter, in: K.A. Gschneider Jr., L. Eyring, G.H. Lander, G.R. Choppin, (Eds.), Handbook on the Physics and Chemistry of Rare Earths, Vol. 19, Elsevier, Amsterdam, 1994, p. 177, and references therein (Chapter 132).
3. Theory of mixed valence: Metals or small gap insulators (invited)
4. Divergence of the Very-Low-Temperature Residual Resistivity ofTmxSeasx→1
5. A. Jayaraman et al., in: Proceedings of the Eighth Rare-Earth Research Conference, Vol. 1, US GPO, Washington DC, 1970, p. 333.