1. Ultrastructural vascular changes in pressure zones of rat molar periodontium incident to orthodontic movement;Rygh;Scand. J. Dent. Res.,1972
2. Erythrocytic crystallization in rat molar periodontium incident to tooth movement;Rygh;Scand. J. Dent. Res.,1973
3. Ultrastructural cellular reactions in pressure zones of rat molar periodontium incident to orthodontic tooth movement;Rygh;Acta Odontol. Scand.,1972
4. Ultrastructural changes in pressure zones of human periodontium incident to orthodontic tooth movement;Rygh;Acta Odontol. Scand.,1973
5. Ultrastructural changes of the periodontal fibers and their attachment in rat molar periodontium incident to orthodontic tooth movement;Rygh;Scand. J. Dent. Res.,1973