@misc{calteches623,
          editor = {Jane S. Dietrich},
           title = {Engineering and Science, Volume 56:4, Summer 1993},
          number = {4},
       publisher = {California Institute of Technology},
            year = {1993},
         address = {Pasadena, CA},
          volume = {56},
         journal = {Engineering and Science},
             url = {https://resolver.caltech.edu/CaltechES:56.4.0}
}