Присъединяването на България към Европейския съюз - предизвикателства, проблеми, перспективи : Научна конференция с международно участие - Бургас, 9-10 юни 2006 г. : Т. 1 - 3
Schumann, C., Tittmann, C. Approach to market and business intelligence in the european management and knowledge transfer networks. Бургаски свободен унив., 2006 с. 16-23,.
Schumann, C., Tittmann, C. Approach to market and business intelligence in the european management and knowledge transfer networks. Бургаски свободен унив., 2006 с. 16-23,.
Schumann, C., Tittmann, C. (2006) Approach to market and business intelligence in the european management and knowledge transfer networks, Бургаски свободен унив. с. 16-23,.
Schumann, C., & Tittmann, C. (2006). Approach to market and business intelligence in the european management and knowledge transfer networks. Бургаски свободен унив., с. 16-23.
Schumann C, Tittmann C. Approach to market and business intelligence in the european management and knowledge transfer networks. Бургаски свободен унив.; 2006. p. с. 16-23.