@book{Motyl:2015,
  author  = "J. Motyl",
  title     = "Discussiones Mathematicae : Differential Inclusions : Control and Optimization, ISSN: 1509-9407",
  publisher = "University of Zielona Góra Press",
  address   = "Zielona Góra",
  year      = "2015",
  volume    = "Vol. 35(no. 1-2)",
}