@article{velchev_kolev_krasimir, 
  title={of ENGINEERING-HUNEDOARA, ROMANIA 415 1. INVESTIGATING THE INFLUENCE OF THE RAKE ANGLE ON THE SPECIFIC CUTTING FORCE BY TURN LATHING}, 
  abstractNote={Research has been carried out to determine the influence of the rake angle on the specific cutting force of different processed materials. New mathematical models are applied that give an adequate description of the physical nature of that relationship. The precision of the empiric mathematical models is estimated by value of the relative error.}, 
  author={Velchev and Kolev and Krasimir}
  }