WASET
Ivanov, K. , Zapryanova, P. , Krustev, S. , Angelova, V.. "Application of Scanning Electron Microscopy and X-Ray Evaluation of the Main Digestion Methods for Determination of Macroelements in Plant Tissue". World Academy of Science, Engineering and Technology, Open Science Index 126, International Journal of Agricultural and Biosystems Engineering (2017), 11(6), 488 - 493.