[MiKTeX] Problem with natbib BibTeX style

[Dimitri P. <dim...@gm...>]

Hello!

In my bibtex file I have the following entry (the mysterious
characters in the note field are Russian name of the book referenced):

@BOOK{OrlovPolunovShchetinov1994,
  author =3D       "A. S. Orlov and A. Iu. Polunov and Iu. A.
Shchetinov",
  TITLE =3D        "Posobie po istorii Otechestva dla postupaiushikh v
VUZy",
  PUBLISHER =3D    "Prostor",
  YEAR =3D         "1997",
  note =3D "(Textbook on the history of motherland for prospective
students of higher education facilities, Russian title: =C0. =D1. =
=CE=F0=EB=EE=E2,
=C0. =DE. =CF=EE=EB=F3=ED=EE=E2, =DE. =C0. =D9=E5=F2=E8=ED=EE=E2; =
=CF=EE=F1=EE=E1=E8=E5 =EF=EE =E8=F1=F2=EE=F0=E8=E8 =
=CE=F2=E5=F7=E5=F1=F2=E2=E0 =E4=EB=FF
=EF=EE=F1=F2=F3=EF=E0=FE=F9=E8=F5 =E2 =C2=D3=C7=FB, =
=CF=F0=EE=F1=F2=EE=F0)",
  address =3D      "Moscow",
  isbn =3D         "5-900451-05-4",
}

If in the text of my document I write the citation like


Russia gained access to the
Baltic Sea as well as some territories in that region (\cite[pp.
118--121]{OrlovPolunovShchetinov1994}).


then in the PDF document, the following text appears

Russia gained access to the Baltic Sea as well as some territories in
that
region ([Orlov et al.(1997)Orlov, Polunov, and Shchetinov, pp.
118=15121]).


Instead of creating a reference "Orlov et al (1997)", "Orlov et
al.(1997)Orlov, Polunov, and Shchetinov, pp. 118=15121" is created.

I suppose that I have an error in the above BibTeX entry, but I do not
know which. How can I bring BibTeX to create the proper (Orlov et al
(1997)) citation?

Thanks

Dimitri Pissarenko