@book{vladykinandhristoljubova1997,
  address = {Izhevsk},
  author  = {Vladykin, V. E. and Hristoljubova, L. S.},
  key     = {Vladykin and Hristoljubova (1997)},
  title   = {Etnografijau dmurtov (Ethnography of the Udmurt)},
  year    = {1997}
}