Kotev, V.; Boiadjiev, G.; Delchev, K.; Boiadjiev, T.; Zagurski, K.; Kawasaki, H.; Mouri, T. ACCURACY IMPROVEMENT BY NEW SENSOR SYSTEM FOR AUTOMATIC BONE DRILLING IN THE ORTHOPEDIC SURGERY. Ann. Sofia Univ. Fac. Math. and Inf. 2015, 102, 271-279.