TY - JOUR AU - Hamid Said TI - An analytical mechanics approach to the first law of thermodynamics and construction of a variational hierarchy JO - Theoretical and applied mechanics PY - 2021 SP - 1 VL - 48 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.2298/TAM200315011S/ DO - 10.2298/TAM200315011S LA - en ID - 10_2298_TAM200315011S ER -