Tender Wolves : Identification and Persecution of Kulaks in Viljandimaa 1940-1949 - Kõll, Anu Mai (. The @Sovietization of the Baltic states. - Tartu : Kleio Ajalookirjanduse Sihtasutus, 2003. - 252 S.. - Ill., graph. Darst.. - ISBN 9985-9304-1-X, 2003)