%0 Journal Article %A V. S. Vladimirov %T Holomorphic functions with positive imaginary part in the future tube %J Sbornik. Mathematics %D 1974 %P 1-16 %V 22 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1974_22_1_a0/ %G en %F SM_1974_22_1_a0