Proof of confinement of static quarks in 3-dimensional U(1) lattice gauge theory for all values of the coupling constant Göpfert, Markus Mack, Gerhard 1981 - DESY EPflicht - frei zugänglich
Iterated Mayer expansion for classical gases at low temperatures Göpfert, Markus Mack, Gerhard 1981 - DESY EPflicht - frei zugänglich
