TY - JOUR A1 - Buczaj, Marcin PB - The Lublin Branch of the Polish Academy of Sciences L2 - http://journals.pan.pl/Content/92171 PY - 2013 IS - No 1 T1 - The use of ultrasonic detectors in peripheral object protection for casement windows security UR - http://journals.pan.pl/dlibra/publication/edition/92171 T2 - Teka Commission of Motorization and Power Industry in Agriculture ER -