@article{GDZPPN002201763,
title = {Twisted convolutions with Calder\'on-Zygmund kernels.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {346},
year = {1984},
pages = {133-150},
zbl = {0532.43007},
url = {http://dml.mathdoc.fr/item/GDZPPN002201763}
}
Müller, Detlef. Twisted convolutions with Calderón-Zygmund kernels.. Journal für die reine und angewandte Mathematik, Tome 346 (1984) pp. 133-150. http://gdmltest.u-ga.fr/item/GDZPPN002201763/