Formation of electric potential coupled with electron transport in membrane particles of micrococcus lysodeikticus and pea chloroplasts Grinyus, L.L.; Il'ina M.D.; Mileikovskaya, E.I.; Skulachev, V.P.; Tikhonova, G.V. Biokhimiya 38(6): 1153-1162 1973 https://eurekamag.com/research/026/651/026651113.php