To cite SYNCSA in a publication use:

Debastiani VJ, Pillar VD (2012). “SYNCSA - R tool for analysis of metacommunities based on functional traits and phylogeny of the community components.” Bioinformatics, 28, 2067-2068. doi:10.1093/bioinformatics/bts325.

Corresponding BibTeX entry:

  @Article{,
    title = {S{YNCSA} - {R} tool for analysis of metacommunities based
      on functional traits and phylogeny of the community components},
    author = {Vanderlei J. Debastiani and Valério D. Pillar},
    journal = {Bioinformatics},
    year = {2012},
    volume = {28},
    pages = {2067-2068},
    doi = {10.1093/bioinformatics/bts325},
  }