Sakmann, Bert Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society;
https://www.nature.com/articles/335645a0.pdf (Any fulltext)
https://doi.org/10.1038/335645a0 (Any fulltext)
Imoto, K., Busch, C., Sakmann, B., Mishina, M., Konno, T., Nakai, J., et al. (1988). Rings of negatively charged amino acids determine the acetylcholine receptor channel conductance. Nature, 335, 645-648. doi:10.1038/335645a0.