TY  - RPRT
TI  - Vela X-1 pulse timing. II - Variations in pulse frequency
AU  - Deeter, J. E.
AU  - Boynton, P. E.
AU  - Lamb, F. K.
AU  - Zylstra, G.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19890035332
ID  - 19890035332
ER  -