Mika, M. , Pina, L. , Landova, M. , Sveda, L. , Havlikova, R. , Marsikova, V. , Hudec, R. , Inneman, A.. "Lightweight Mirrors for Space X-Ray Telescopes". World Academy of Science, Engineering and Technology, Open Science Index 58, International Journal of Materials and Metallurgical Engineering, (2011), 5(10), 866 - 870.