In this paper, the compositional inverses of a class of linearized permutation polynomials of the form P(x)=x+x2+\tr(ax) over the finite field F2n for an odd positive integer n are explicitly determined.
@article{arxiv.1305.1411,
title = {The compositional inverse of a class of linearized permutation polynomials over $\mathbb{F}_{2^n}$, $n$ odd},
author = {Baofeng Wu},
journal= {arXiv preprint arXiv:1305.1411},
year = {2013}
}