7. Subs. by A ct 13 of 1992, s. 2, for “fifty years” (w.e.f. 28 -10-1991). 16 (2) In sub -section ( 1), references to the author shall, in the case of an anonymous work of joint authorship, b e construed, - (a) where the identity of one of the authors is disclosed, as references to that author; (b) where the identity of more authors than one is disclosed, as references to the author who dies last from amongst such authors. (3) In sub -section ( 1), references to the author sha ll, in the case of a pseudonym s work of j oint authorship, be construed, - (a) where the names of one or more (but not all) of the aut hors are pseudonym s and his or their identity is not disclosed, as references to the author wh ose name is not a pseudonym, or, if the names of two or more of the authors are not pseudonyms, as references to such of those authors who dies last; (b) where the names of one or more (but not all) of the authors are pseudonyms an d the identity of one or more of them is disclosed, as references to the author who dies last from amongst the authors whose names are not pseudonyms and the authors whose names are pseudonyms and are disclosed; and (c) where the names of all the authors are pseudonyms and the ide ntity of one of them is disclosed, as references to the author whose identity is disclosed or if the identity of two or more of such authors is disclosed, as references to such of those authors who dies last. Explanation .-For the purposes of this section, the identity of an author shall be deemed to have been disclosed, if either the identity of the author is disclosed publicly by both the author and the publisher or is otherwise establi shed to the satisfaction of the 1[Appellate Board ] by that author .