@article{black_helicopters_1992, title = {Helicopters and {Aunt} {Minnie}}, volume = {53}, copyright = {All rights reserved}, issn = {0029-2559 (Print) 0029-2559 (Linking)}, url = {http://www.ncbi.nlm.nih.gov/pubmed/1594059}, number = {4}, journal = {N C Med J}, author = {Black, K. J.}, year = {1992}, pages = {175--7} }