1. Morphological studies on the large cerebral arteries with reference to the aetiology of subarachnoid haemorrhage;Hassler;Acta psychiat. et neurol. scandinav.,1961
2. Physiological intima cushions in the large cerebral arteries of young individuals. 1. Morphological structure and possible significance for the circulation;Hassler;Acta path. et microbiol. scandinav.,1962