Effective Interactions between Macroions 1 -- Dilute Solutions of Flexible and Spherical Ionic Polymers -- Colloidal Dispersions -- Kikuchi—Kossel Line Analysis on Colloidal Crystals -- Effective Interactions between Macroions 2 -- Viscometric Properties of Dilute Ionic Polymer Solutions and Colloidal Dispersions -- Phase Transitions by Computer Simulation -- Further Problems of Interparticle…