%0 Journal Article %A Chao, Zhang %A Torrea, José L. %T Boundedness of Differential Transforms for Heat Semigroups Generated by Schrödinger Operators %J Canadian journal of mathematics %D 2021 %P 622-655 %V 73 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000097/ %R 10.4153/S0008414X20000097 %F 10_4153_S0008414X20000097