TY - JOUR AU - Giammanco, C. AU - Beckman, John E. AU - Zurita Muñoz, Almudena AU - Relaño Pastor, Mónica PY - 2004 SN - 0004-6361 SN - 1432-0746 UR - http://hdl.handle.net/10481/29037 AB - The accepted explanation of the observed dichotomy of two orders of magnitude between in situ measurements of electron density in HII regions, derived from emission line ratios, and average measurements based on integrated emission measure, is the... LA - eng PB - EDP Sciences KW - ISM KW - HII regions KW - Galaxies TI - Propagation of ionizing radiation in HII regions: the effects of optically thick density fluctuations ER -