In 1930, the occurrence was designated as "Procopiu Phenomenon" by Augustin Boutaric [fr]. Part of this research was included in Procopiu's doctoral thesis...

described his art in a famous book, La Magie blanche dévoilée (1784). Augustin Boutaric (born 12 August 1885 in Béduer; died 1949 in Dijon) was noted physician...