@article{Krassowska:2007,
  author  = "D. Krassowska and J. Matkowski",
  title   = "A simultaneous system of functional inequalities and mappings which are weakly of a constant sign",
  journal = "Journal of Inequalities in Pure and Applied Mathematics [online]",
  volume  = "Vol. 8",
  number  = "no 2",
  pages   = "[9]",
  year    = "2007",
  note    = "http://jipam.vu.edu.au/, [dostÍp: 11-02-2008]",
}