@ARTICLE {SWANNELL:2003, title = {Effect of harvest date on the dormancy period of yam (Dioscorea rotundata)}, author = {Swannell, M. and Wheeler, T. and Asiedu, R. and Craufurd, P. }, journal = {Tropical Science}, year = {2003}, volume = {43}, pages = {103--107}, note = {RTB; Root and Tuber; Yam}, }