Fošner's generalized $(m,n)$-Jordan centralizer conjecture

Let $m,n\geq 1$ be fixed integers, let $R$ be a semiprime ring satisfying suitable torsion restrictions, and let $T:R\longrightarrow R$ be a generalized $(m,n)$-Jordan centralizer. Fošner's conjecture. Then $T$ is a two-sided centralizer. The paper presents this as a conjecture extending Fošner's prime-ring result to semiprime rings; the supplied text does not state whether it has been resolved.