Quantum mechanical interaction-free measurements by Avshalom C. Elitzur and Lev Vaidman (1993, 10.1007/BF00736012)

Published in Foundations of Physics 23, pp. 987–997 (July 1993). Author byline: Avshalom C. Elitzur and Lev Vaidman. Public author preprint: arxiv.org/abs/hep-th/9305002v2; full text: arxiv.org/pdf/hep-th/9305002v2.