“…In this era, characterized by knowledge economy, as Toffler (1991) noted, it is knowledge, not cheap labour, and symbols, rather than raw materials, that embody and add value. Knowledge representation (Jones, 2006; Snidaro & Foresti, 2007; Balch et al , 2007) and knowledge management (Maliappis & Sideridis, 2004; Amaravadi, 2005; Bernard & Tichkiewitch, 2008) are hotly debated topics among academia and commercial enterprises. In scientific research, studies are carried out on the structure, organization, efficiency and source of knowledge.…”