Kroupa, V. F., Štursa, J. Computers in phase locked loops (PLL) design. Bratislava: Department of Radio and Electronics, FEI STU Bratislava, 2000. ISBN 80-227-1389-9. In: ONDRÁČEK, O., DROBNÁ, I., PROKOPOVÁ, I., eds. Radioelektronika 2000. Conference Proceedings. , s. II.14-I0.17.