@inproceedings { PLGL08ib,
author = { Langevin, Philippe and Leander, Gregor },
title  = { Classification of Boolean Quartic Forms in 8 variables },
booktitle = { Boolean Functions in Cryptology and Information Security  },
pages = { 139--147 },
volume  = { 18 },
year = {2008},
rang = {B},
}