@article{gautschi:1959:eig,
    author = {Gautschi, Walter},
     title = {Some elementary inequalities relating to the gamma and
              incomplete gamma function},
   journal = {J. Math. Phys.},
    volume = {38},
    number = {1},
      year = {1959},
     pages = {77–81},
   mrclass = {33.00},
  mrnumber = {MR0103289 (21 \#2067)},
mrreviewer = {H. O. Pollak},
     zblno = {0094.04104}}