• Mobilný obchod, Quo vadis? 

    Hudec, Róbert; Cigánek, Peter (Advances in electrical and electronic engineering. 2004, vol. 3, no. 4, p. 18-23.)
  • Tvorba nových služieb 

    Cigánek, Peter; Hudec, Róbert (Advances in electrical and electronic engineering. 2004, vol. 3, no. 4, p. 30-33.)