Jansen, R. F., Hermann, P. M., Pieneman, A. W., & Ter Maat, A. (1994). Modulation of the electrical activity of motorneurons by neuropeptides encoded on the CDCH-gene of the pond snail Lymnaea stagnalis. Netherlands Journal of Zoology, 44(3-4), 200-211. doi:10.1163/156854293X00340.