TY - RPRT TI - Prolonged experimental cerebral vasospasm. AU - F A Simeone AU - K G Ryan AU - J R Cotter PY - 1968 DO - 10.3171/jns.1968.29.4.0357 UR - https://pubmed.ncbi.nlm.nih.gov/4972469/ ID - 4972469 ER -