1. Simple permutations and pattern restricted permutations;Albert;Discrete Math.,2005
2. On packing densities of permutations;Albert;Electron. J. Comb.,2002
3. Equipopularity classes in the separable permutations;Albert;Electron. J. Comb.,2015
4. Packing densities of patterns;Barton;Electron. J. Comb.,2004