Tsegaye, T.; Goobar, E.; Karlsson, A.; Björk, G.; Loh, M. Y.; Lim, K. H. (1998-05-01). "Efficient interaction-free measurements in a high-finesse interferometer". Physical Review A. 57 (5): 3987–3990. Bibcode:1998PhRvA..57.3987T. doi:10.1103/PhysRevA.57.3987.
Tsegaye, T.; Goobar, E.; Karlsson, A.; Björk, G.; Loh, M. Y.; Lim, K. H. (1998-05-01). "Efficient interaction-free measurements in a high-finesse interferometer". Physical Review A. 57 (5): 3987–3990. Bibcode:1998PhRvA..57.3987T. doi:10.1103/PhysRevA.57.3987.