Loy A, Hofmann H (2014). “HLMdiag: A Suite of Diagnostics for Hierarchical Linear Models in R.” Journal of Statistical Software, 56(5), 1–28. doi:10.18637/jss.v056.i05.

Corresponding BibTeX entry:

  @Article{,
    title = {HLMdiag: A Suite of Diagnostics for Hierarchical Linear
      Models in R},
    author = {Adam Loy and Heike Hofmann},
    journal = {Journal of Statistical Software},
    year = {2014},
    volume = {56},
    number = {5},
    pages = {1--28},
    doi = {10.18637/jss.v056.i05},
  }