1. W. Denk, J.H. Strickler, W.W. Webb: Science 248, 73 (1990)
2. W. Denk, D.W. Piston, W.W. Webb: in: Handbook of Biological Confocal Microscopy, ed. by J.B. Pawley ( Plenum Press, New York, 1995 )
3. C.J.R. Sheppard, M. Gu: Optik 86, 104 (1990)
4. J.C. Diels, W. Rudolph: in: Ultrashort Laser Pulse Phenomena ( Academic Press, San Diego, 1996 )
5. G.Q. Xiao, G.S. Kino: Proc. SPIE Int. Soc. Opt. Eng. 809, 107 (1987)