Report Air pollution in the border areas of Norway and Russia. Summary report 1990-1991. Sivertsen, B.; Makarova, T.; Hagen, L O.; Baklanov, A A. Publication details Series: NILU OR 8/92 Publisher: NILU Year: 1992 ISBN: 82-425-0336-2 File: NILU OR 8/92 (pdf)