@ARTICLE{Hadjiski_Mincho_B._Nonlinear_2012,
 author={Hadjiski, Mincho B. and Doukovska, Lyubka A. and Kojnov, Stefan L.},
 volume={vol. 58},
 number={No 4},
 journal={International Journal of Electronics and Telecommunications},
 howpublished={online},
 year={2012},
 publisher={Polish Academy of Sciences Committee of Electronics and Telecommunications},
 title={Nonlinear Trend Analysis of Mill Fan System Vibrations for Predictive Maintenance and Diagnostics},
 URL={http://www.czasopisma.pan.pl/Content/87240/PDF/48.pdf},
 doi={10.2478/v10177-012-0048-9},
}