Guerrilla Girls names are pseudonyms generally based on dead female artists. Many authors write fan fiction under pseudonyms. This is a list of nicknames and pseudonyms of Nazis. Others like Dalton Trumbo wrote under pseudonyms or the names of colleagues. Some performers have many pseudonyms and stage names (indicated here by "a.k.a."). Contracts stated that authors could not use their Stratemeyer Syndicate pseudonyms independently of the Syndicate. The adoption of fictional pseudonyms, symbols, values and metaphors from these works is very common. May published in other journals using pseudonyms. He occasionally adopted Anglicized pseudonyms, such as Dan Savio and Leo Nichols. Various voice actors were listed under different pseudonyms in this series. They also collaborate with a variety of other musicians under many futuristic pseudonyms. McGoohan wrote and directed several episodes, often using pseudonyms. Two guest stars were credited with pseudonyms. Eventually, he avoided mathematics altogether, writing on other subjects under a number of pseudonyms. He ran his shop while continuing to write stories under pseudonyms.