TY  - RPRT
TI  - New transient source, Cepheus X-4, observed by OSO-7.
AU  - Ulmer, M. P.
AU  - Baity, W. A.
AU  - Wheaton, W. A.
AU  - Peterson, L. E.
PY  - 1973
UR  - https://ntrs.nasa.gov/citations/19730058320
ID  - 19730058320
ER  -