1999
Kaasik M., Liblik V., Kaasik H.: Long-Term Deposition Patterns of Airborne Wastes in the North-East of Estonia. Oil Shale, 16, 315-329, 1999.
Keevallik S., Post P., Tuulik J.: European Circulation Patterns and Meteorological Situation in Estonia. Theoretical and Applied Climatology 63, No 1/2, 117-127, 1999.
Keevallik S., Loitjärv K.: European Circulation Patterns and Synoptic Situation in Estonia. Publicationes Instituti Geographici Universitas Tartuensis 85, 123-133, 1999.
Kutser T., Veismann U., Reinart A., Erm A., Herlevi A., Kallio K.: Results of Light Absorption/Attenuation Measurements in Finnish and Estonian Lakes in Summer 1997. Proc. Estonian Acad. Sci. Biol. Ecol. 48, 46-62, 1999.
Nilson T., Kuusk A., Lang M., Lükk T., Anniste J., Peterson U.: Satelliidipiltidel baseeruva metsakorralduse alused. Pidev metsakorraldus, EPM Metsandusteaduskonna toimetised 32, Tartu, 81-87, 1999.
Russak V.: Changes in Time Series of Some Climate Elements in Estonia in Early Spring. Publicationes Instituti Geographici Universitatis Tartuensis 85, 52-60, 1999. Rõõm R.: Least Action Principle for General, Non-Hydrostatic, Compressible, Acoustically Non-Filtered Pressure-Coordinate Model. Quart. J. Royal Meteorol. Soc., 125, 1903-1907, 1999.