@article{Guy1986,
  author    = {{Richard K. Guy}},
  title     = {{John Isbell's Game of Beanstalk and John Conway's Game of Beans Don't Talk}},
  journal   = {{Math. Magazine}},
  year      = {{1986}},
  volume    = {{59}},
  pages     = {{259--269}},
  note      = {{MR 88c:90163}},
}