Surface modification of yttria stabilized zirconia by ion implantation / Daphne ScholtenLattice vibrations of solid solutions : an infra-red spectroscopical study of nitrate ions in alkali halides / Rudolf MetselaarElectrical and dielectrical phenomena of solid solutions La1-xBaxF3-x / Antonius RoosRelaxation processes in organic amorphous solids at low temperature : a study by optical hole-burning / Hendrikus Petrus Helena ThijssenThe ionic conductivity and defect structure of fluorite-type solid solutions Ba1-xUxF2+2x / Martin OuwerkerkIonic conduction and dielectric loss in fluorite-type solid solutions / Koenraad Eldert Dirk Wapenaar