1. Abney , S. P 1987 The English noun phrase in its sentential aspect
2. The English “group genitive” is a special clitic;Anderson;English Linguistics,2008
3. Broken agreement;Bock;Cognitive Psychology,1991
4. Duffield , N 1995 On the number of numeral projections http://ngduffield.staff.shef.ac.uk/papers/1995-CLA-Numerals.pdf