Chalmeton V, 1971, Act. Elec., 14, 99
Fonck R J, 1982, Appl. Opt., 21, 2115, 10.1364/AO.21.002115
10.1016/0168-9002(85)90499-1
10.1016/0029-554X(82)90787-X
Koppel L N, 1977, Rev. Sci. Instrum., 48, 669, 10.1063/1.1135104
Kruit P, 1983, J. Phys. E: Sci. Instrum., 16, 313, 10.1088/0022-3735/16/4/016
10.1016/0020-7381(83)87003-X
Parkes W, 1970, IEEE Trans. Nucl. Sci., 17, 360, 10.1109/TNS.1970.4325713
Saloman E B, 1980, vol 172
Turner D W, 1984, J. Microscopy, 136, 259, 10.1111/j.1365-2818.1984.tb00533.x
10.1016/0029-554X(79)90734-1