Gray, MD;
Cohen, RJ;
Richards, AMS;
Yates, JA;
Field, D;
(2001)
Co-propagation of maser emission at 1720 and 4765 MHz.
Monthly Notices of the Royal Astronomical Society
, 324
(3)
643 - 647.
10.1046/j.1365-8711.2001.04349.x.