The Presidential Reference which, in effect and substance, seeks to question the correctness of the judgment in the 2G spectrum allocation case, was entirely impermissible and not maintainable, the former Attorney General and senior counsel, Soli Sorabjee, argued in the Supreme Court on Tuesday. Appearing for the Centre for Public Interest Litigation, Mr. Sorabjee told a five-judge Constitution Bench comprising Chief Justice S.H. Kapadia and Justices D.K. Jain, J.S. Khehar, Dipak Misra and Ranjan Gogoi that doubts about the correctness of a judgment of this court “which has attained finality cannot be the subject matter of reference under Article 143 of the Constitution.”