Experimental and theoretical investigations of a γ-type Stirling engine powered by a parabolic solar concentrator in the city of Karaj: a case studyHasan Sabahi, Mansoor Keyanpour-Rad and Ali Asghar TofighMechanics & Industry, 17 1 (2016) 103DOI: https://doi.org/10.1051/meca/2015053