1
by Dashwood, Hevina S.
Published 2012
Cambridge University Press

2
by Hirt, Alfred Michael
Published 2010
Oxford University Press

4
by Speight, James G.
Published 2009
Gulf Pub. Co.

5
by Lie, Knut-Andreas
Published 2019
Cambridge University Press

6
by Bartis, James T.
Published 2005
RAND