@Article{454707,
     author = "Luděk Šebek, Jana Hoffmannová, Soňa Jandová, Tomáš Dohnal",
     title = "Single trail biking as a form of nature-based tourism : pedagogics of free-time context",
     year =  2014,
     volume =  9,
     number =  ,
     journal =  Zeszyty Naukowe Wyższej Szkoły Humanitas. Pedagogika,
     pages =  s. 191-196,
    }