To cite metatest in publications use:
Huizenga HM, Visser I, Dolan CV (2011). “Hypothesis testing in random effects meta-regression.” British journal of mathematical and statistical psychology, 64, 1-19.
Corresponding BibTeX entry:
  @Article{,
    title = {Hypothesis testing in random effects meta-regression},
    author = {Hilde M. Huizenga and Ingmar Visser and Conor V. Dolan},
    journal = {British journal of mathematical and statistical
      psychology},
    year = {2011},
    volume = {64},
    pages = {1-19},
  }