1996

Hawkes, P.W. - Kasper, E.  Principles of Electron Optics. London: Academic Press, 1996, s. 635, ISBN 0-12-333341-5.

1989

Hawkes, P.W. - Kasper, E.  Principles of Electron Optics. London: Academic Press, Volume 1 – Basic Geometrical Optics, 1989, ISBN 0-12-333351-2.