@article{CardenasS1992,
  author    = {Angeles C{\´a}rdenas S.},
  title     = {Situaci{\´o}n de la ense{\~n}anza de la briolog{\´i}a en M{\´e}xico},
  journal   = {Tropical bryology},
  number    = {6},
  pages     = {57 -- 59},
  year      = {1992},
}