Pjanić K. On the Functional Equation $\boldsymbol{U}_{\boldsymbol{t}}\boldsymbol{+} \boldsymbol{U}_{\boldsymbol{-t}} = \boldsymbol{V}_{\boldsymbol{t}} \boldsymbol{+} \boldsymbol{V}_{\boldsymbol{-t}}$ in a Banach Space. sjm [Internet]. 2024 Jun. 12 [cited 2024 Oct. 15];3(2):241-8. Available from: https://sjm.anubih.ba/index.php/sjm/article/view/393