@article{kuki:1972:cgf,
    author = {Kuki, Hirondo},
     title = {Algorithm 421. Complex gamma function with error control},
   journal = {Comm. ACM},
    volume = {15},
      year = {1972},
    number = {4},
     pages = {271–272},
      issn = {0001-0782},
       doi = {10.1145/361284.361298}}