To cite vcvComp in publication use:
Le Maitre A, Mitteroecker P (2019). “Multivariate Comparison of Variance in R.” Methods in Ecology and Evolution, 10(9), 1380–1392.
As vcvComp is evolving, you may want to cite its version number. Find it with 'help(package=vcvComp)'.
Corresponding BibTeX entry:
  @Article{,
    title = {Multivariate Comparison of Variance in R},
    author = {Anne {Le Maitre} and Philipp Mitteroecker},
    journal = {Methods in Ecology and Evolution},
    year = {2019},
    volume = {10},
    number = {9},
    pages = {1380--1392},
  }