The distribution of cosmic-ray sources in the Galaxy, $\mathsf{\gamma}$-rays and the gradient in the CO-to-H$\mathsf{_2}$ relation

Publisher： Edp Sciences

E-ISSN： 1432-0746|422|3|L47-L50

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.422, Iss.3, 2004-08, pp. : L47-L50

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