1. Magnetic Superconductors.- 1. 1 Introduction.- 1. 2 How The Problem of Magnetic Superconductors Originated.- 1. 3 Pairbreaking Effects — Impurities and External Fields.- 1. 4 Impact of Ternary Rare Earth Compounds.- 1. 5 Antiferromagnetic Superconductors.- 1. 6 Ferromagnetism and Superconductivity.- 1. 7 Superconductivity and Competing Magnetic Interactions.- 1. 8 Concluding Remarks.- References.- 2. Systematics of Superconductivity in Ternary Compounds.- 2. 1 Review of Superconductivity in Ternary Compounds by Structure Class.- 2. 2 Concluding Remarks.- 2A. Appendix: Tables of Crystallographic, Superconducting and Magnetic Data for 14 Classes of Ternary Compounds.- References.- 3. Critical Fields of Ternary Molybdenum Chalcogenides.- 3. 1 Overview of Experimental Results.- 3. 2 Summary of Theory.- 3. 3 The Role of Impurities.- 3. 4 Anisotropy.- 3. 5 The Temperature Dependence of Hc2 and the Question of the Paramagnetic Limitation.- 3. 6 Compounds with Magnetic Ions. The Jaccarino-Peter Effect.- 3. 7 Critical Currents and the Problem of Wire Production.- References.- 4. Superconductivity, Magnetism and Their Mutual Interaction in Ternary Rare Earth Rhodium Borides and Some Ternary Rare Earth Transition Metal Stannides.- 4. 1 Background.- 4. 2 Ternary RERh4B4 Compounds.- 4. 3 Pseudoternary RERh4B4 Compounds.- 4. 4 Ternary REMxSny Compounds.- 4. 5 Summary.- References.- 5. Superconductivity and Magnetism in (RE)Mo6X8 Type Compounds.- 5. 1 Ternaries.- 5. 2 Pseudoternaries.- 5. 3 Analysis of Upper Critical Field Curves.- 5. 4 Overview of Exchange Interactions in (RE)Mo6X8 Compounds.- 5. 5 Summary.- References.- 6. Electronic Structure and Superconductivity/Magnetism in Ternary Compounds.- 6. 1 Theoretical Approach.- 6. 2 Chevrel Phase Compounds.- 6. 3 Ternary RhodiumBorides.- References.- 7 NMR and Mössbauer Studies in Ternary Superconductors.- 7. 1 Mössbauer Effect Studies of Local Vibrational Modes.- 7. 2 Conduction Electron-Local Moment Interactions in Paramagnetic Ternary Compounds.- 7. 3 Local Moments in Magnetically Ordered Rare-Earth Compounds.- 7. 4 Crystal Chemistry and Charge Transfer.- 7. 5 Conclusions.- References.- 8. Neutron Scattering Studies of Magnetic Ordering in Ternary Superconductors.- 8. 1 Neutron Scattering Theory.- 8. 2 Antiferromagnetic Superconductors.- 8. 3 Ferromagnetic Superconductors.- References.- 9. Theory of Magnetic Superconductors.- 9. 1 Influence of Spin Scattering on Superconductivity.- 9. 2 Magnetic Structures in Superconductors Resulting From Exchange Interactions.- 9. 3 The Magnetic State in the Presence of Electromagnetic Coupling.- 9. 4 Alternative Forms of Pairing States.- References.- Additional References with Titles.