@inbook {309804,
	title = {Grammatical combination in Pan paniscus: Processes of learning and invention in the evolution and development of language},
	booktitle = {"Language{\textquotedblright} and intelligence in monkeys and apes: comparative developmental perspectives},
	year = {1990},
	pages = {540-578},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	chapter = {20},
	issn = {9780511665486},
	doi = {http://dx.doi.org/10.1017/CBO9780511665486.022  },
	author = {Greenfield, P. M. and Savage-Rumbaugh, E.S.}
}
