Bidlack, J., Ramírez-Oliveras, G. and Stutte, C. A. (1989) “NADH oxidation, H+ efflux, and nutrient ion uptake of soybean roots”, The Journal of Agriculture of the University of Puerto Rico, 73(4), pp. 375–380. doi: 10.46429/jaupr.v73i4.6316.