Recep EFE and Sermin Tagil
Journal of Applied Sciences 7 ( 9 ): 1260 - 1270 , 2007
Recep Efe, Deniz Ekinci and Isa Curebal
Journal of Applied Sciences 8 ( 1 ): 49 - 58 , 2008
Recep Efe and Malcolm Greenwood
Journal of Applied Sciences 7 ( 16 ): 2277 - 2284 , 2007