Nappi, A., and D. Zaccaria. “GENERALIZED FORCES AND DISSIPATION FUNCTIONS IN THE CONTEXT OF AN INTERNAL VARIABLE APPROACH APPLIED TO THE SOLUTION OF ELASTIC-PLASTIC PROBLEMS”. IJRDO - Journal of Mechanical And Civil Engineering, Vol. 4, no. 11, Dec. 2018, pp. 01-17, doi:10.53555/mce.v4i11.2551.