[1]
“Internal motions in H II regions. V. The planetary nebula M1-67, possible an H2 region”., RMxAA, vol. 4, no. 1, pp. 271–277, Jan. 1978, Accessed: Dec. 10, 2025. [Online]. Available: https://astronomia.unam.mx/journals/rmxaa/article/view/1979rmxaa...4..271p