Measurement of the $D^{*\pm}$ Cross Section using a Soft-Pion Analysis   in Two-Photon Processes
  The differential cross section of $d\sigma(e^+e^-\to e^+e^-D^{*\pm}X)/dP_T$ was measured using a soft-pion analysis of $D^{*\pm}\to \pi_s^\pm D^0(\bar{D^0})$ at TRISTAN. The average $\sqrt{s}$ was 58.1 GeV and the integrated luminosity used in this analysis was 198 pb$^{-1}$, respectively. 
R. Enomoto, et al. (TOPAZ collaboration)