Variable-temperature ultrahigh vacuum scanning tunneling microscope: Mechanical and electronic instrumentationO. ZügerH.P. Ottet al.1992Review of Scientific Instruments
Interaction force detection in scanning probe microscopy: Methods and applicationsU. DürigO. Zügeret al.1992Journal of Applied Physics
Atomic structure of the α-Ga(001) surface investigated by scanning tunneling microscopy: Direct evidence for the existence of Ga2 molecules in solid galliumO. ZügerU. Dürig1992Physical Review B
STM investigation of gallium single-crystal surfaces close to bulk meltingO. ZügerU. Dürig1992Ultramicroscopy