@article{Wallenta2012,
  author    = {D. Wallenta},
  title     = {Elliptic quasicomplexes on compact closed manifolds},
  journal   = {Integral equations and operator theor},
  volume    = {73},
  number    = {4},
  pages     = {517 -- 536},
  doi       = {10.1007/s00020-012-1983-7},
  year      = {2012},
}