A. P. Zieliński

Effectiveness of the Trefftz method in different engineering optimization procedures

H. Sanecki, A. P. Zieliński, M Karaś, 2001 .

On trial functions applied in the generalized Trefftz method

A. P. Zieliński, A. Zieliński, 1995 .

Special Trefftz Elements and Improvement of Their Conditioning

A. P. Zieliński, A. Zieliński, 1997 .

Trefftz method: Fitting boundary conditions

Ismael Herrera, A. P. Zieliński, I. Herrera, 1987 .