@article{WuestneckFiedlerMilleretal.1994,
  author    = {Rainer W{\"u}stneck and H. Fiedler and Reinhard Miller and K. Haage},
  title     = {Surface chemical characterisation of maleic acid mono[(4-alkyl-piperazine-2-yl)-ethylesters] : 2. The pH dependent adsorption behavior of an ampholytic surfactant},
  year      = {1994},
}