Determination of the gas-to-dust ratio in nearby dense clouds using X-ray absorption measurementsM. H. Vuong, T. Montmerle, N. Grosso, E. D. Feigelson, L. Verstraete and H. OzawaA&A, 408 2 (2003) 581-599DOI: https://doi.org/10.1051/0004-6361:20030942