1. and , CRC Handbook, The Phthalocyanines, Vol. 1, 2, CRC Press, Inc., Boca Raton (Florida) 1983.
2. and , Phthalocyanines – Properties and Applications, VCH Publ., Inc., Weinheim 1989.
3. Thesis, Fachbereich Physik der Humboldt-Universität zu Berlin, 1989.
4. Electron Energy Loss Measurements on Metal-Free Phthalocyanine
5. Electron energy loss investigations on lead phthalocyanine