Editors's note: On a class of solutions of the gravitation equations of relativity by B. Datt
Introduction to the reprint of \textit{B. Datt}'s article [Z. Phys. 108, 314-321 (1938; Zbl 0018.18606)] (see Zbl 0955.83045 above).
scientific article; zbMATH DE number 1404187