1. Strata for randomized experiments;Bailey;J. Roy. Statist. Soc. Ser. B,1991
2. k-homogeneous latin trades;Bean;Bayreuth. Math. Schr.,2005
3. On the X-rays of permutations;Bebeacua;Electron. Notes Discrete Math.,2005
4. Bagheri Gh Behrooz, E.S. Mahmoodian, On the existence of k-homogeneous latin bitrades, Util. Math. (in press)
5. Asymptotic methods in enumeration;Bender;SIAM Rev.,1974