@ARTICLE {BIEMOND:2012,
title = {Are investments in an informal seed system for cowpea a worthwhile endeavour?},
author = {Biemond, P. C. and Stomph, T. and Kamara, A. and Abdoulaye, T. and Hearne, S. and Struik, P. C. },
journal = {International Journal of Plant Production},
year = {2012},
month = {July},
volume = {6},
number = {3},
pages = {367--386},
issn = {1735-6814},
url = {http://journals.gau.ac.ir:8080/Jm/Programs/JurnalMgr/VolumArticle/EN_215_8.pdf},
}