no. 3
The equivalence principle meets the uncertainty principle
Annales de l'I.H.P. Physique théorique, Tome 49 (1988) no. 3, pp. 307-314. 
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     author = {Greenberger, Daniel M.},
     title = {The equivalence principle meets the uncertainty principle},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {307--314},
     publisher = {Gauthier-Villars},
     volume = {49},
     number = {3},
     year = {1988},
     mrnumber = {988430},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1988__49_3_307_0/}
}
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Greenberger, Daniel M. The equivalence principle meets the uncertainty principle. Annales de l'I.H.P. Physique théorique, Tome 49 (1988) no. 3, pp. 307-314. http://archive.numdam.org/item/AIHPA_1988__49_3_307_0/

[1] D.M. Greenberger, J. Math. Physics, t. 11, 1970, p. 2329 ; t. 11, 1970, p. 2341 ; t. 15, 1974, p. 395 ; t. 15, 1974, p. 406. | Zbl