@article{kolbig:1970:zir,
    author = {K{\"o}lbig, K. S.},
     title = {Complex zeros of an incomplete {R}iemann zeta function and of
              the incomplete gamma function},
   journal = {Math. Comp.},
    volume = {24},
      year = {1970},
    number = {111},
     pages = {679–696},
   mrclass = {65.25},
  mrnumber = {MR0273787 (42 \#8663)},
     links = {\URL[FullText]{http://links.jstor.org/sici?sici=0025-5718%28197007%2924%3A111%3C679%3ACZOAIR%3E2.0.CO%3B2-9}},
     zblno = {0226.65011}}