Gill, Frank B.; Slikas, Beth & Sheldon, Frederick H. Phylogeny of titmice (Paridae): II. Species relationships based on sequences of the mitochondrial cytochrome-b gene. Auk. 2005, 122: 121–143. doi:10.1642/0004-8038(2005)122[0121:POTPIS]2.0.CO;2.
Kvist, Laura: Broggi, J.; Illera, J.C.; Koivula, K. Colonisation and diversification of the blue tits (Parus caeruleus teneriffae-group) in the Canary Islands. Molecular Phylogenetics and Evolution. 2005, 34: 501–511. doi:10.1016/j.ympev.2004.11.017.
Kvist, Laura. Response to "Taxonomic status of 'phylogroups' in the Parus teneriffae complex (Aves)" by George Sangster. Molecular Phylogenetics and Evolution. 2006, 38: 290. doi:10.1016/j.ympev.2005.10.012.
Sangster, George. The taxonomic status of 'phylogroups' in the Parus teneriffae complex (Aves): Comments on the paper by Kvist et al. (2005). Molecular Phylogenetics and Evolution. 2006, 38: 288–289. doi:10.1016/j.ympev.2005.10.009.
