@misc{indiciae1a48e825bc30, title = {A simple visual alignment device for use with the Leksell stereotactic co-ordinate frame.}, author = {B H Dawson and E Dervin and O B Heywood}, year = {1969}, doi = {10.1136/jnnp.32.1.60}, url = {https://pubmed.ncbi.nlm.nih.gov/4886649/}, note = {Source identifier: 4886649} }