Radiation and environment safety in North-West Russia : use of impact assessments and risk estimation / ed. by Per Strand, Malgorzata K. Sneve and Andrey V. PechkurovChallenges in radiation protection and nuclear safety regulation of the nuclear legacy / ed. by Malgorzata K. Sneve and Mikhail F. KiselevChallenges in radiation protection and nuclear safety regulation of the nuclear legacy / ed. by Malgorzata K. Sneve and Mikhail F. Kiselev