On Polynomial Decompositions
J. Klüners, Journal of Symbolic Computation 27 (1999) 261–269.

KANT 
M. DABERKOW, C. FIEKER, J. Klüners, M. POHST, K. ROEGNER, M. SCHÖRNIG, K. WILDANGER, Journal of Symbolic Computation 24 (1997) 267–283.

On Computing Subfields
J. Klüners, M. Pohst, Journal of Symbolic Computation 24 (1997) 385–397.