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Evaluation of variation in $$\left( m_\mathrm{p}/m_\mathrm{e}\right)$$ m p / m e from the frequency difference between the $${{}^{15}\hbox {N}_{2}}^{+}$$ 15 N 2 + and $${}^{87}\hbox {Sr}$$ 87 Sr transitions

Crossref DOI link: https://doi.org/10.1007/s00340-016-6479-8

Published Online: 2016-07-02

Published Print: 2016-07

Update policy: https://doi.org/10.1007/springer_crossmark_policy