Gilbert, P. D., & Meijer, E. (2006–2015). tsfa [Computer software and manual]. http://cran.r-project.org/web/packages/tsfa/
(Package for the statistical software system R that computes time series factor analysis estimators, factor scores, and fit statistics.)
Meijer, E. (1994–2013). apacite [Computer software and manual]. http://www.ctan.org/tex-archive/biblio/bibtex/contrib/apacite
(LaTeX/BibTeX package that automatically generates citations, reference lists, and author indexes according to the rules of the Publication Manual of the American Psychological Association, with extensive manual and test files.)
Busing, F. M. T. A., Meijer, E., & Van der Leeden, R. (1994–2005). MLA [Computer software]. (Computer program for multilevel analysis with resampling options.)