Medusa who was turned into stone by the head. Then Perseus gave the Gorgon's head to Athena, who placed it on her shield, the Aegis. Some classical references refer to three Gorgons; Harrison considered that the tripling of Medusa into a trio of sisters was a secondary feature in the myth: A number of early classics scholars interpreted the myth of the Medusa as a quasi-historical – "based on or reconstructed from an event, custom, style, etc., in the past", or "sublimated" memory of an actual invasion. According to Joseph Campbell: In 1940, Sigmund Freud's "Das Medusenhaupt (Medusa's Head)" was published
MEDUSA to the MEDUSA software to CAD Schroer, MEDUSA's biggest reseller in Germany. CAD Schroer, which started as a drafting bureau in 1986, was an active MEDUSA user and had developed a number of add-ons for the software. Thus MEDUSA was now owned by a company that had grown up with the product. The development partnership with Quintic also transferred to CAD Schroer. Under CAD Schroer, project Pegasus became the STHENO/PRO software, which was first launched in 2002. The Fourth generation of MEDUSA, known as MEDUSA4, was launched in 2004. It included a comprehensive revamp of the functionality, the development of