@article{Wallenta2012,
  author    = {Wallenta, D.},
  title     = {Elliptic quasicomplexes on compact closed manifolds},
  series = {Integral equations and operator theor},
  volume    = {73},
  journal   = {Integral equations and operator theor},
  number    = {4},
  publisher = {Springer},
  address   = {Basel},
  issn      = {0378-620X},
  doi       = {10.1007/s00020-012-1983-7},
  pages     = {517 -- 536},
  year      = {2012},
  abstract  = {We consider quasicomplexes of pseudodifferential operators on a smooth compact manifold without boundary. To each quasicomplex we associate a complex of symbols. The quasicomplex is elliptic if this symbol complex is exact away from the zero section. We prove that elliptic quasicomplexes are Fredholm. Moreover, we introduce the Euler characteristic for elliptic quasicomplexes and prove a generalisation of the Atiyah-Singer index theorem.},
  language  = {en}
}