Bernard A. Lietaer

Bernard Lietaer (7 February 1942 – 4 February 2019) was a civil engineer, economist, author and professor. He studied monetary systems and promoted the idea that communities can benefit from creating their own local or complementary currency, which circulate parallel with national currencies. ... Source: Article "Bernard Lietaer" from Wikipedia in english, licensed under CC-BY-SA 3.0.