Published El-Nino/Southern Oscillation (ENSO): Recent Evolution and Possibilities for Long Range Flow Forecasting in the Brahmaputra-Jamuna River by Jahan N., Zobeyer A.T.M.H. and Bhuiyan M.A. 179-185_Jahan_377_8-3.pdf
Published Malaria situation in Bulgaria and surveillance measures (1991-2000) by Kurdova R.I., Vutchev D.I. and Petrov P.P. Kurdova_153_162.pdf