On the relative placement and the transportation problem for standard-cell layout. - Knut M. Just; Jürgen M. Kleinhans; Frank M. Johannes (DAC, 1986)

GORDIAN: a new global optimization/rectangle dissection method for cell placement. - Jürgen M. Kleinhans; Georg Sigl; Frank M. Johannes (ICCAD, 1988)

GORDIAN: VLSI placement by quadratic programming and slicing optimization. - Jürgen M. Kleinhans; Georg Sigl; Frank M. Johannes; Kurt Antreich (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 1991)