1. Adams, J. E., Prawirohardjo, S.: Fate of red blood cells injected into cerebrospinal fluid pathways. Neurology9:561–564, 1959.
2. Adams, R. D., Fisher, C. M., Hakin, S., Ojemann, R. G., Sweet, W. H.: Symptomatic occult hydrocephalus with normal cerebrospinal fluid pressure: A treatable syndrome. N. Engl. J. Med.273:117–126, 1956.
3. Alajouanine, T., Thurel, R., Durupt, T.: Cerebral hemorrhage and quantitation of the elements of the blood. Rev. Neurol.78:617–618, 1946.
4. Alksne, J. F., Lovings, E. T.: The role of arachnoid villus in the removal of red blood cells from the sub-arachnoid space: An electron microscope study in the dog. J. Neurosurg.36:192–200, 1972.
5. Alksne, J. F., Lovings, E. T.: Functional ultrastructure of arachnoid villus. Arch. Neurol.27:371–377, 1972.