TY JOUR TI Massless Stueckelberg field, exact solutions in Cartesian coordinates and gauge degrees of freedom KW massless Stueckelberg field KW Cartesian coordinates KW exact solutions KW energy-momentum tensor KW gauge solutions JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Semenyuk, O.A. AU Ivashkevich, A.V. AU Buryy, A.V. AU Pletyuhov, V.A. AU Red'kov, V.M. PY 2023 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"