@article{burgess:1963:dfa,
    author = {Burgess, A.},
     title = {The determination of phases and amplitudes of wave functions},
   journal = {Proc. Phys. Soc.},
    volume = {81},
      year = {1963},
    number = {3},
     pages = {442–452},
       doi = {10.1088/0370-1328/81/3/308}}