O. M. Bondariev, T. O. Ryzhova, and O. O. Bondariev, “EVALUATION OF THE INFLUENCE OF THE INCLINATION ANGLE OF TRACTION ON A VERTICAL LOADING OF THE WHEELSETS OF TWO-AXLE TRUCKS OF THE LOCOMOTIVE IN THE IMPLEMENTATION OF TRACTION”, STP, no. 4, pp. 136–140, Aug. 2004.