We extend Krylov's $L_p$-solvability theory to the Cauchy problem for systems of parabolic stochastic partial differential equations. Some additional integrability and regularity properties are also presented.
"A Note on Krylov's $L_p$-Theory for Systems of SPDEs." Electron. J. Probab. 6 1 - 35, 2001. https://doi.org/10.1214/EJP.v6-85