George Rigopoulos, John Psarras and Dimitrios Th. Askounis
American Journal of Applied Sciences 5 ( 7 ): 844 - 851 , 2008
George Rigopoulos, John Psarras and Dimitrios Th. Askounis
Journal of Applied Sciences 8 ( 3 ): 443 - 452 , 2008
George Rigopoulos, John Psarras and Dimitrios Th. Askounis
Journal of Applied Sciences 8 ( 3 ): 407 - 419 , 2008
George Rigopoulos, John Psarras and Dimitrios Th. Askounis
Journal of Applied Sciences 8 ( 5 ): 899 - 902 , 2008