@ARTICLE{Puchała_Z._Symbolic_2017, author={Puchała, Z. and Miszczak, J.A.}, volume={65}, number={No 1}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={21-27}, howpublished={online}, year={2017}, title={Symbolic integration with respect to the Haar measure on the unitary groups}, URL={http://ochroma.man.poznan.pl/Content/105697/PDF/10.1515bpasts-2017-0003.pdf}, doi={10.1515/bpasts-2017-0003}, }