LEGAL.txt

“Fourier-Bessel Particle-In-Cell (FBPIC)”, Copyright (c) 2016,
University of Hamburg and The Regents of the University of California,
through Lawrence Berkeley National Laboratory (subject to receipt of
any required approvals from the U.S. Dept. of Energy).  All rights
reserved.

If you have questions about your rights to use or distribute this
software, please contact Berkeley Lab's Innovation & Partnerships
Office at IPO@lbl.gov.

NOTICE.  This Software was developed under funding from the
U.S. Department of Energy and the U.S. Government consequently retains
certain rights. As such, the U.S. Government has been granted for
itself and others acting on its behalf a paid-up, nonexclusive,
irrevocable, worldwide license in the Software to reproduce,
distribute copies to the public, prepare derivative works, and perform
publicly and display publicly, and to permit other to do so.