WASET
Markovska, I. , Yovkova, F. , Minov, G. , Rusev, D. , Lyubchev, L.. "Investigation of Silane Modified Ceramic Surface of Porous Mullite Ceramics". World Academy of Science, Engineering and Technology, Open Science Index 79, International Journal of Environmental and Ecological Engineering, (2013), 7(7), 409 - 413.