This volume contains the lectures delivered at the Fourth Training Course in the Physics of Correlated Electron Systems and High-Tc Superconductors. In contrast to usual workshops, this course was designed to promote active participation of senior and young researchers and to introduce them to some specific problems. Three of the four lectures held are included in this book.

Inhalt
A. F. Barabanov, Institute for High Pressure Physics, Troitsk, Russia, L. A. Maksimov and A. V. Mikheyenkov, Russian Research Center, Moscow, Russia, on the Theory of the Spin-Polaron for 2D Antiferromagnets.- W. Nolting, Humboldt-University Berlin, Germany, on Ferromagnetism and Electronic Correlations.- A. M. Ole, Jagellonian University, Krakow, Poland, M. Cuoco and N. B. Perkins, Università di Salerno, Baronissi, Italy, on Magnetic and Orbital Ordering in Cuprates and Manganites.