@article{1365645,
      recid = {1365645},
      author = {Ol'shanskii, A. Yu, and Sapir, Mark,},
      title = {The conjugacy problem and Higman embeddings /},
      pages = {1 online resource (150 pages) :},
      note = {"Volume 170,  Number 804 (first of 4 numbers)."},
      url = {http://library.usi.edu/record/1365645},
}