pseudonymous work definition

pseudonymous work means any work whose author conceals his identity behind an assumed name;
pseudonymous work means a work where the pseudonym adopted by the author or, in the case of a work of joint authorship the authors, does not reveal the identity of the author or authors and the identity of the author or authors is unknown;
pseudonymous work means a work whose author makes use of a pseudonym that does not identify him; a work in relation to which a name is used that leaves the civil identity of the author in no doubt shall not be considered a pseudonymous work;

More Definitions of pseudonymous work

pseudonymous work means a work in which the author is presented under a pseudonym that does not identify him;
pseudonymous work means a work for which the author is identified under a fictitious name.