Nettling M, Treutler H, Grau J, Keilwagen J, Posch S, Grosse I (2015). “DiffLogo: a comparative visualization of sequence motifs.” BMC bioinformatics, 16. ISSN 1471–2105, http://bmcbioinformatics.biomedcentral.com/articles/10.1186/s12859-015-0767-x.