Authors: GULYAEV SA SOROCHENKO RL TSIVILEV AP

Citation: Sa. Gulyaev et al., OBSERVATIONS OF H, HE, AND C RADIO LINES IN THE SOURCE W3A AT 8 MM - THE HELIUM PROBLEM, Astronomy letters, 23(2), 1997, pp. 165-171

Authors: TSIVILEV AP

Citation: Ap. Tsivilev, THE SPECTRAL CHARACTER OF AN HII-REGION IONIZING SOURCE AS DETERMINEDFROM H AND HE RADIO RECOMBINATION LINE OBSERVATIONS - O-B STARS, ASTRONOM ZH, 70(1), 1993, pp. 72-81