1. Kivisild, H. R. River and Lake Ice Terminology. Proc. of I.A.H.R. Symposium, Ice and Its Action on Hydraulic Structures, Session 1.
2. Michel, B. 1971.Winter Regime of Rivers and Lakes, 42Cold Regions Science and Engineering. Monograph 111-Bla
3. Kristinsson, B. Ice Monitoring Equipment. Proc. of I.A.H.R. Symposium, Ice and its Action on Hydraulic Structures, Session 1.