@misc{calteches114,
          volume = {9},
         journal = {Engineering and Science},
           month = {April},
          editor = {Donald S. Clark},
           title = {Engineering and Science, Volume 9:4, April 1946},
          number = {4},
       publisher = {California Institute of Technology},
            year = {1946},
         address = {Pasadena, CA},
             url = {https://resolver.caltech.edu/CaltechES:9.4.0}
}