An ALMA study of the Orion Integral Filament - I. Evidence for narrow fibers in a massive cloudA. Hacar, M. Tafalla, J. Forbrich, J. Alves, S. Meingast, J. Grossschedl and P. S. TeixeiraA&A, 610 (2018) A77DOI: https://doi.org/10.1051/0004-6361/201731894