@article{SpjutKingstonCassady1992,
  author    = {Richard W. Spjut and David G. I. Kingston and John M. Cassady},
  title     = {Systematic screening of bryophytes for antitumor agents},
  journal   = {Tropical bryology},
  number    = {6},
  pages     = {193 -- 202},
  year      = {1992},
}