@dataset{currentDoc,
  author = {Chen, Li},
  title = {Gundy-Varopoulos martingale transforms  and their projection operators},
  publisher = {UBC cIRcle BIRS Workshop Lecture Videos},
  issued = {2019-03-22},
  howpublished = {{\url{http://hdl.handle.net/2429/69074}}}
}