Kachanovskii, N. A., & Tesko, V. A. (2009). Stochastic integral of Hitsuda–Skorokhod type on the extended Fock space. Ukrains’kyi Matematychnyi Zhurnal, 61(6), 733-764. https://umj.imath.kiev.ua/index.php/umj/article/view/3056