Requested reference
Agnarsson, I. & Coddington, J. A. (2008). Quantitative tests of primary homology. Cladistics 24: 51-61. 
-- Show included taxa
Agnarsson, I. & Coddington, J. A. (2008). Quantitative tests of primary homology. Cladistics 24: 51-61. -- Show included taxa