@article{5405, author = {M. Hanson and Peter Conti}, title = {K-Band Spectroscopy of OB Stars: A Preliminary Classification}, year = {1994}, journal = {The Astrophysical Journal}, volume = {423}, pages = {L139}, month = {Jan-03-1994}, issn = {0004-637X}, url = {http://articles.adsabs.harvard.edu/full/1994ApJ...423L.139H}, doi = {10.1086/187256}, }