参考1:The Stata Journal (2012) vv, Number ii, pp. 1–39
《Stochastic frontier analysis using Stata》
Federico Belotti
University of Rome Tor Vergata
Silvio Daidone
University of York
Giuseppe Ilardi
Bank of Italy
Vincenzo Atella
University of Rome Tor Vergata
参考2:
      Data Envelopment Analysis
      st0193/dea.ado
      st0193/dea.sthlp
      by Ji, Yong-Bae, Korea National Defense University,
           Republic of Korea
         Lee, Choonjoo, Korea National Defense University,
           Republic of Korea
      Support:  sarang64@snu.ac.kr, sarang90@kndu.ac.kr,
                bloom.rampike@gmail.com