%0 Journal Article %A Georgiou, Nikos %T Null hypersurfaces in 4-manifolds endowed with a product structure %J Glasgow mathematical journal %D 2024 %P 24-35 %V 66 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089523000319/ %R 10.1017/S0017089523000319 %F 10_1017_S0017089523000319