Using violet laser-induced chlorophyll fluorescence emission spectra for crop yield assessment of cowpea (Vigna unguiculata (L) Walp) varieties Submitted by fox-cubs-admin on 14 January 2021 Author(s) B Anderson, P K Buah-Bassuah, J P Tetteh (2004) Journal Measurement Science and Technology 15 (7), 1255– 1265 Publication Year Thu, 01/01/2004 - 12:00