The complexity of scheduling TV commercials. - Klemens Hägele; Colm Ó'Dúnlaing; Søren Riis (MFCSIT, 2000)

The Projective Noether Maple Package: Computing the Dimension of a Projective Variety. - Marc Giusti; Klemens Hägele; Grégoire Lecerf; Joël Marchand; Bruno Salvy (J. Symb. Comput., 2000)

Kronecker's and Newton's Approaches to Solving: A First Comparison. - D. Castro; Luis Miguel Pardo; Klemens Hägele; Jose Enrique Morais (J. Complex., 2001)