@incollection{chom1963,
 title = {Formal Properties of Grammars},
 author = {Noam Chomsky},
 year = {1963},
 booktitle = {Handbook of Mathematical Psychology},
 volume = {II},
 pages = {323--418},
 editor = {Luce, R. Duncan and Bush, Robert R. and Galanter, Eugene}
}