@article{fullerton:1972:mig,
    author = {Fullerton, L. W.},
     title = {Algorithm 435: {M}odified incomplete gamma function},
   journal = {Comm. ACM},
    volume = {15},
    number = {11},
      year = {1972},
     pages = {993–995},
      note = {Includes Fortran code. For
              a Remark see ACM Trans. Math.
              Software {\bf{4}} (1978), no. 3, pp. 296–304.},
      issn = {0001-0782},
       doi = {10.1145/355606.361891},
     links = {\URL[Remark]{http://doi.acm.org/10.1145/355791.355803}}}