Improved Position of the 38 sec-X-ray Pulsar near OAO 1653-40 Obtained with the HEAO-1 Modulation Collimator Armstrong, T. ; Johnston, M. ; Bradt, H. V. ; Doxsey, R. E. ; Schwartz, D. A. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1979 Bibcode: 1979BAAS...11..425A