The influence of violations of assumptions on multilevel parameter estimates and their standard errors
The influence of violations of assumptions on multilevel parameter estimates and their standard errors (DOI: https://doi.org/10.1016/j.csda.2003.08.006) was written by Cora J.M. Maas and Joop J. Hox in 2003. It was published in Computational Statistics & Data Analysis (vol. 46, no. 3).
A problem for multilevel models is the assumption that residuals be normally distribution.