@article{DA,
      author = {Edwards, Lowell (Miles Lowell), 1898-1982 and Starr,  Albert, 1926-},
      url = {http://digitalcollections.ohsu.edu/record/6043},
      title = {Three Starr-Edwards heart valve prototypes with flap  design},
      abstract = {Three Starr-Edwards heart valve prototypes, flap design,  showing various stages of design including a valve with no  flaps. Valves sit beside ruler for scale.},
      number = {DA},
      doi = {https://doi.org/10.6083/M44J0CP3},
      recid = {6043},
      address = {1960},
}