@article{epos1316,
          volume = {80},
          number = {3},
           month = {May},
          author = {Zhenming Wang},
           title = {Comment on "Sigma: Issues, Insights, and Challenges" by F. O. Strasser, N. A. Abrahamson, and J. J. Bommer},
       publisher = {Seismological Society of America},
            year = {2009},
         journal = {Seismological Research Letters},
           pages = {491--493},
             url = {https://episodesplatform.eu/eprints/1316/}
}