@Article{612838, author = "Waldemar Karpa, Joanna Leśniowska", title = "Efficiency of Health Care Systems: Stochastic Frontier Analysis Including Innovation Component ", year = 2014, volume = 8, number = , journal = Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Pragmata tes Oikonomias, pages = s. 159-167, }