Recognition of emergency situations of large hydrogenerators and turbogenerators by multi factors analysis of complicated stressed states of units and component parts - A. N. Vakulenko; K. A. Kobzar; A. V. Tretjak; P. G. Gakal; A. A. Partala; E. A. Ovsjannikova; M. I. Morozinskij (Journal of mechanical engineering, 2015)