Aberrations in confocal fluorescence microscopy induced by mismatches in refractive indexStefan W. Hell, Ernst H. K. Stelzer, G. Reiner et al.|Journal of Microscopy|1993Cited by 651
Confocal microscopy with an increased detection aperture: type-B 4Pi confocal microscopyStefan W. Hell, Ernst H. K. Stelzer, Steffen Lindek et al.|Optics Letters|1994Cited by 166
Measurement of the 4Pi-confocal point spread function proves 75 nm axial resolutionStefan W. Hell, Ernst H. K. Stelzer, Christoph Cremer et al.|Applied Physics Letters|1994Cited by 151
Two-photon excitation 4Pi confocal microscope: Enhanced axial resolution microscope for biological researchPekka Hänninen, Christoph Cremer, Stefan W. Hell et al.|Applied Physics Letters|1995Cited by 123
Three-dimensional organization of promyelocytic leukemia nuclear bodiesMarion Lang, Karsten Rippe, Stefan W. Hell et al.|Journal of Cell Science|2010Cited by 120