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Precision measurement of the pion mass difference m pi --m pi 0.
Crawford JF, Daum M, Frosch R, Jost B, Kettle P, Marshall RM, Wright BK, Ziock KO. Crawford JF, et al. Among authors: wright bk. Phys Rev D Part Fields. 1991 Jan 1;43(1):46-58. doi: 10.1103/physrevd.43.46. Phys Rev D Part Fields. 1991. PMID: 10013227 No abstract available.
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