TY  - CPAPER
AU  - Jаn Zіаjа
TI  - POWER FLUCTUATION INDEX (PFI) - A METHOD OF EVALUATING THE EFFICIENCY AND QUALITY OF PERFORMED HORIZONTAL DIRECTIONAL DRILLING (HDD)
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining
PY  - 2019
SP  - 1053
EP  - 1060
DO  - 10.5593/sgem2019/1.2/s06.134
PB  - STEF92 Technology
ER  -