de la Fuente، Eduardo؛ Trinidad، Miguel A.؛ Tafoya، Daniel؛ Toledano-Juárez، Ivan؛ García-Flores، Samuel (2022). "The symbiotic and bipolar nebula M 2-9: Morphological variability of the collimated ionized wind arising from the core". Publications of the Astronomical Society of Japan. ج. 74 ع. 3: 594–601. arXiv:2203.00881. Bibcode:2022PASJ...74..594D. DOI:10.1093/pasj/psac020.
de la Fuente، Eduardo؛ Trinidad، Miguel A.؛ Tafoya، Daniel؛ Toledano-Juárez، Ivan؛ García-Flores، Samuel (2022). "The symbiotic and bipolar nebula M 2-9: Morphological variability of the collimated ionized wind arising from the core". Publications of the Astronomical Society of Japan. ج. 74 ع. 3: 594–601. arXiv:2203.00881. Bibcode:2022PASJ...74..594D. DOI:10.1093/pasj/psac020.
de la Fuente، Eduardo؛ Trinidad، Miguel A.؛ Tafoya، Daniel؛ Toledano-Juárez، Ivan؛ García-Flores، Samuel (2022). "The symbiotic and bipolar nebula M 2-9: Morphological variability of the collimated ionized wind arising from the core". Publications of the Astronomical Society of Japan. ج. 74 ع. 3: 594–601. arXiv:2203.00881. Bibcode:2022PASJ...74..594D. DOI:10.1093/pasj/psac020.