?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Shvidenko%2C+A.&rft.aulast=Shvidenko&rft.aufirst=A.&rft.date=1996&rft.isbn=5-7564-0151-2&rft.title=Generalized+estimation+of+a+gain+and+mortality+in+Russian+forests&rft.genre=proceeding