Rampichini, Carla | Grilli, Leonardo A Polytomous Response Multilevel Model with a non Ignorable Selection Mechanism 2004 - Firenze University Press Is part of Statistical modelling : proceedings of the 19th International workshop on statistical modelling, Florence (Italy), 4-8 July, 2004 Permissions Download Copy/paste Printing Download | Copy/paste | Printing EUR 10.00 VAT Excluded Purchase PDF c Chapter