Published Spatial and Temporal Distribution of Air Temperature in the Northern Hemisphere by Philandras C.M., Nastos P. Th., Kanellopoulou E.A. and Paliatsos A.G.
Published Improvement of H2O2 Stabilization in Rainwater Samples by Ceron R.M., Muriel M. and Ceron J.G.
Published Malaria situation in Bulgaria and surveillance measures (1991-2000) by Kurdova R.I., Vutchev D.I. and Petrov P.P.