Equation of state of ultracold fermions in the 2D BEC-BCS crossover region - Böttcher, Igor; Bayha, Luca; Kedar, Dhruv; Murthy, Puneet A.; Neidig, Mathias; Ries, Martin Gerhard; Wenz, André Niklas; Zürn, Gerhard; Jochim, Selim; Enss, Tilman (Physical review letters, 2016)