@inproceedings{40209,
  author       = {{Rösler, Margit}},
  booktitle    = {{Applications of Hypergroups and Related Measure Algebras}},
  issn         = {{1098-3627}},
  pages        = {{299–318}},
  publisher    = {{American Mathematical Society}},
  title        = {{{Convolution algebras which are not necessarily positivity-preserving}}},
  doi          = {{10.1090/conm/183/02068}},
  volume       = {{183}},
  year         = {{1995}},
}