Published Malaria situation in Bulgaria and surveillance measures (1991-2000) by Kurdova R.I., Vutchev D.I., Petrov P.P. Kurdova_153_162.pdf
Published Intercomparison of forecasting methods for flood warning in the river Cam catchment by Lekkas D.F., Maxey R.T., Wheater H.S. 12_Lekkas.pdf