@article { PLXH10,
author = {  Langevin, Philippe and Hou, Xiang-Dong  },
title  = {  Counting Partial Spread Functions in Eight Variables },
journal = {  IEEE Transactions on Information Theory   },
number = { 4 },
pages = {  2263--2269 },
volume  = {  57  },
year = {2011},
}