Yong Han Kang, and Jin-Mun Jeong. “L2-Primitive Process for Retarded Stochastic Neutral Functional Differential Equations in Hilbert Spaces”. Journal of Computational Analysis and Applications (JoCAAA), vol. 29, no. 5, Oct. 2021, pp. 838-61, http://eudoxuspress.com/index.php/pub/article/view/196.