1. Ein Gegenstück zum Ritzschen Verfahren;Trefftz,1926
2. Trefftz method: an overview;Kita;Adv Eng Software,1995
3. Li Z-C, Lu T-T, Hu H-Y, Cheng AH-D. Trefftz and collocation methods. WIT Press, Southampton/Boston 2008.
4. A simple multi-source-point Trefftz method for solving direct/inverse SHM problems of plane elasticity in arbitrary multiply-connected domains;Dong;CMES,2012
5. Comparison of different methods for choosing the collocation points in the boundary collocation method for 2D-harmonic problems with special purpose Trefftz functions;Mierzwiczak;Eng Anal Boundary Elem,2012