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 EP - 28 VL - 48 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_2021_48_1_a0/ ID - TAM_2021_48_1_a0 ER -