@misc{SinghSingh2010,
  author    = {S. K. Singh and D. K. Singh},
  title     = {A catalogue of the liverworts and hornworts of Himachal Pradesh, India},
  booktitle = {61},
  series    = {Archive for Bryology},
  number    = {061},
  type      = {periodicalpart},
  pages     = {13},
  year        = {2010},
}