BESIII_2018_I1655158
Measurement of the $q^2$ spectrum in the decays by $D^0\to \pi^- \mu^+\nu_\mu$ and $D^+\to \pi^0 \mu^+\nu_\mu$ BES-III.
Measurement of the $q^2$ spectrum in the decays by $D^0\to \pi^- \mu^+\nu_\mu$ and $D^+\to \pi^0 \mu^+\nu_\mu$ BES-III.
