@book{HuaTahara1998,
  author    = {Hua, Chen and Tahara, Hidetoshi},
  title     = {On the holomorphic solution of non-linear totally characteristic equations},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1998, 20},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {15 S.},
  year      = {1998},
  language  = {en}
}
@book{YinHuaWeian1998,
  author    = {Yin, Yang and Hua, Chen and Weian, Liu},
  title     = {On solutions of the chemotaxis equations},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1998, 06},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {14 S.},
  year      = {1998},
  language  = {en}
}