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A country level longitudinal study on the effect of student age, class size and socio-economic status : based on PIRLS 2001, 2006 & 2011
Liu, Hongqiang, (2014)
Double serial correlation for multilevel growth curve models
Anumendem, Dickson, (2013)
Constructing measures for school process variables: the potential of multilevel confirmatory factor analysis
Ellen D’Haenens, (2012)