@Article{484677, author = "Salam Al-Augby, Sebastian Majewski, Agnieszka Majewska, Kesra Nermend", title = "A comparison of k-means and fuzzy c-means clustering methods for a sample of gulf cooperation council stock markets", year = 2014, volume = 14(22), number = 2, journal = Folia Oeconomica Stetinensia, pages = s. 19-36, }