N. Toyota: graduated in 1977 from Tohoku University 1977-1985 research associate, Institute for Materials Research, Tohoku Univ., Japan 1985-1994 associate professor, Institute for Materials Research, Tohoku Univ., Japan 1994-1998 professor, Research Institute for Advanced Science and Technology, Osaka Prefecture Univ., Japan 1998- professor, Physics Department, Graduate School of Science, Tohoku Univ., Japan M. Lang: graduated in 1991 from the Technical University Darmstadt, Germany; 1991-1992 Research associate at the Institute for Materials Research, Tohoku University, Sendai, Japan; 1992-1996 Research Associate and Habilitation at the Technical University Darmstadt, Germany; 1996-2000 Head of the low-temperature group at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2000- University professor at the Physics Institute at the J.W. Goethe-University, Frankfurt(M), Germany; J. Muller: graduated in 2002 from the Technical University Dresden, Germany; 2002 - 2003 Research associate at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2003 - Research associate at the Center for Materials Research and Technology (MARTECH) at Florida State University in Tallahassee, FL, USA

• Introduction: Historical Remarks.- Basic Concepts.- Structural Aspects.- Normal-State Properties.- Magnetic-Field Effects.- Superconductivity.- Phenomena of Interacting ?- and d-Electrons.- Epilogue.

N. Toyota: graduated in 1977 from Tohoku University 1977-1985 research associate, Institute for Materials Research, Tohoku Univ., Japan 1985-1994 associate professor, Institute for Materials Research, Tohoku Univ., Japan 1994-1998 professor, Research Institute for Advanced Science and Technology, Osaka Prefecture Univ., Japan 1998- professor, Physics Department, Graduate School of Science, Tohoku Univ., Japan M. Lang: graduated in 1991 from the Technical University Darmstadt, Germany; 1991-1992 Research associate at the Institute for Materials Research, Tohoku University, Sendai, Japan; 1992-1996 Research Associate and Habilitation at the Technical University Darmstadt, Germany; 1996-2000 Head of the low-temperature group at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2000- University professor at the Physics Institute at the J.W. Goethe-University, Frankfurt(M), Germany; J. Muller: graduated in 2002 from the Technical University Dresden, Germany; 2002 - 2003 Research associate at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2003 - Research associate at the Center for Materials Research and Technology (MARTECH) at Florida State University in Tallahassee, FL, USA

• Introduction: Historical Remarks.- Basic Concepts.- Structural Aspects.- Normal-State Properties.- Magnetic-Field Effects.- Superconductivity.- Phenomena of Interacting ?- and d-Electrons.- Epilogue.

N. Toyota: graduated in 1977 from Tohoku University 1977-1985 research associate, Institute for Materials Research, Tohoku Univ., Japan 1985-1994 associate professor, Institute for Materials Research, Tohoku Univ., Japan 1994-1998 professor, Research Institute for Advanced Science and Technology, Osaka Prefecture Univ., Japan 1998- professor, Physics Department, Graduate School of Science, Tohoku Univ., Japan M. Lang: graduated in 1991 from the Technical University Darmstadt, Germany; 1991-1992 Research associate at the Institute for Materials Research, Tohoku University, Sendai, Japan; 1992-1996 Research Associate and Habilitation at the Technical University Darmstadt, Germany; 1996-2000 Head of the low-temperature group at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2000- University professor at the Physics Institute at the J.W. Goethe-University, Frankfurt(M), Germany; J. Muller: graduated in 2002 from the Technical University Dresden, Germany; 2002 - 2003 Research associate at the Max-Planck Institute for Chemical Physics of Solids in Dresden, Germany; 2003 - Research associate at the Center for Materials Research and Technology (MARTECH) at Florida State University in Tallahassee, FL, USA

• Introduction: Historical Remarks.- Basic Concepts.- Structural Aspects.- Normal-State Properties.- Magnetic-Field Effects.- Superconductivity.- Phenomena of Interacting ?- and d-Electrons.- Epilogue.