@misc{calteches274,
           title = {Engineering and Science, Volume 31:8, May 1968},
          editor = {Edward Hutchings, Jr.},
          number = {8},
       publisher = {California Institute of Technology},
            year = {1968},
         address = {Pasadena, CA},
          volume = {31},
         journal = {Engineering and Science},
           month = {May},
             url = {https://resolver.caltech.edu/CaltechES:31.8.0}
}