TY  - JOUR
AU  - Hiptmair, Ralf
AU  - Moiola, Andrea
AU  - Perugia, Ilaria
AU  - Schwab, Christoph
TI  - Approximation by harmonic polynomials in star-shaped domains and exponential convergence of Trefftz $hp$-dGFEM
JO  - ESAIM: Mathematical Modelling and Numerical Analysis 
PY  - 2014
SP  - 727
EP  - 752
VL  - 48
IS  - 3
PB  - EDP-Sciences
UR  - http://www.numdam.org/articles/10.1051/m2an/2013137/
DO  - 10.1051/m2an/2013137
LA  - en
ID  - M2AN_2014__48_3_727_0
ER  -