Geiger, Mathias Felix & J.K. McCrary, J.R. Stauffer Jr.. 2010. "Description of two new species of the Midas cichlid complex (Teleostei: Cichlidae) from Lake Apoyo, Nicaragua". Proceedings of the Biological Society of Washington. 123(2):.159-173. DOI: 10.2988/09-20.1 (crc02664) (resumen)
Geiger, Mathias Felix & Jeffrey K. McCrary, Ulrich K. Schliewen. 2010. "Not a simple case – A first comprehensive phylogenetic hypothesis for the Midas cichlid complex in Nicaragua (Teleostei: Cichlidae: Amphilophus)". Molecular Phylogenetics and Evolution. 56(3):1011-1024. DOI: 10.1016/j.ympev.2010.05.015 (crc02449) (resumen)
Geiger, Mathias Felix & J.K. McCrary, U.K. Schliewen. 2013. "Crater Lake Apoyo Revisited - Population Genetics of an Emerging Species Flock". Plos One. 8(9):e74901. DOI: 10.1371/journal.pone.0074901 (crc05914) (resumen)