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A. O. Radomskii, “Generalization of Romanoff's Theorem”, Матем. заметки, 114:5 (2023),
903–913 
; A. O. Radomskii, “Generalization of Romanoff's Theorem”, Math. Notes, 114:5 (2023), 903–913 
; A. O. Radomskii, “Generalization of Romanoff's Theorem”, Math. Notes, 114:5 (2023),