TY - RPRT TI - Multi-objective optimization of a free-piston Vuilleumier heat pump using a genetic algorithm AU - Chen, Hanfei AU - Hofbauer, Peter AU - Longtin, Jon P. PY - 2020 DO - 10.1016/j.applthermaleng.2019.114767 UR - https://www.osti.gov/biblio/1780275 ID - 1780275 ER -