Paul, Matthias R. (2005-12-12). "Minolta SR-T Batterieadapter" [Using a Bandgap voltage reference as Mercury battery replacement]. Minolta-Forum (in German). Archived from the original on 2016-10-11. Retrieved 2011-02-26.
Paul, Matthias R. (2009-03-14). "Minolta SR-T Batterieadapter" [Using a 7×7 mm SMD transistor-based low-side voltage regulator circuit as Mercury battery replacement]. Minolta-Forum (in German). Archived from the original on 2016-03-27. Retrieved 2011-02-26.
Paul, Matthias R. (2005-12-12). "Minolta SR-T Batterieadapter" [Using a Bandgap voltage reference as Mercury battery replacement]. Minolta-Forum (in German). Archived from the original on 2016-10-11. Retrieved 2011-02-26.
Paul, Matthias R. (2009-03-14). "Minolta SR-T Batterieadapter" [Using a 7×7 mm SMD transistor-based low-side voltage regulator circuit as Mercury battery replacement]. Minolta-Forum (in German). Archived from the original on 2016-03-27. Retrieved 2011-02-26.