Circumstellar disks in the outer Galaxy: the star-forming region NGC 1893M. Caramazza, G. Micela, L. Prisinzano, L. Rebull, S. Sciortino and J. R. StaufferA&A, 488 1 (2008) 211-218DOI: https://doi.org/10.1051/0004-6361:200810132