@inbook {3327, title = {Considerations in formalizing a classification}, booktitle = {Cladistics:perspectives on the reconstruction of evolutionary history}, year = {1984}, publisher = {Columbia University Press}, organization = {Columbia University Press}, address = {New York}, keywords = {CLADISTICS, CLASSIFICATION, HISTORY, INCOMPLETE}, author = {Phillips, R. B.}, editor = {Duncan, T. and Stuessy, T. F.} }