Müller, Holger; Peters, Achim; Chu, Steven. A precision measurement of the gravitational redshift by the interference of matter waves. Nature. 2010, 463 (7283): 926–9. Bibcode:2010Natur.463..926M. PMID 20164925. doi:10.1038/nature08776. According to Nature he worked on this "during nights, weekends and on planes – after putting in 70–80 hours a week as energy secretary"
Müller, Holger; Peters, Achim; Chu, Steven. A precision measurement of the gravitational redshift by the interference of matter waves. Nature. 2010, 463 (7283): 926–9. Bibcode:2010Natur.463..926M. PMID 20164925. doi:10.1038/nature08776. According to Nature he worked on this "during nights, weekends and on planes – after putting in 70–80 hours a week as energy secretary"
Kathleen Kerr. They Began Here. Newsday. 2008-07-16 [2008-09-17]. (原始内容存档于2008-12-14).
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Müller, Holger; Peters, Achim; Chu, Steven. A precision measurement of the gravitational redshift by the interference of matter waves. Nature. 2010, 463 (7283): 926–9. Bibcode:2010Natur.463..926M. PMID 20164925. doi:10.1038/nature08776. According to Nature he worked on this "during nights, weekends and on planes – after putting in 70–80 hours a week as energy secretary"