K. H. Mühling, S. Schubert and K. Mengel, “Role of Plasmalemma H+ ATPase in Sugar Retention by Roots of Intact Maize and Field Bean Plants,” Zeitschrift für Pflanzenernhrung und Bodenkunde, Vol. 156, No. 2, 1993, pp. 155-161. doi10.1002/jpln.19931560210 - References - Scientific Research Publishing