Relativistic formulation of the Bell inequality was the first open problem I tried to solve on my own, yet as a third-year undergraduate student. The issue was suggested to me by Ryszard Horodecki who was at that time our teacher of QM. The manuscript was written down in 1984 and rejected by Physics Letters A as "purely academic". In 1995 I found by accident a simpler and more general derivation of the main formula and decided to publish this in the Physical Review A. The two (see also this) published 1997 papers went practically unnoticed until the sudden burst of interest in the field of relativistic qubits around 2002. For certain copyright-of-idea reasons I decided to post here the scan of the original 1984 manuscript in the form it was returned by Physics Letters A, including the date of receipt and editorial number.