To cite TESS in a publication use:

H"ohna S (2013). “Fast simulation of reconstructed phylogenies under global time-dependent birth–death processes.” Bioinformatics, 29(11), 1367–1374.

Corresponding BibTeX entry:

  @Article{,
    title = {Fast simulation of reconstructed phylogenies under global
      time-dependent birth--death processes},
    author = {S. H{"o}hna},
    journal = {Bioinformatics},
    year = {2013},
    volume = {29},
    number = {11},
    pages = {1367--1374},
  }