Reference needed in documentation for Amaldi and Perdue-Zunger self-interaction corrections

Can literature references be added in the documentation for the forms of the Amaldi and Perdue-Zunger self-interaction correction (keyword SICCorrection) as implemented in the code?

Edit: also clarify Almadi SIC with spinors is not implemented in the variable documentation (line 93 of src/electrons/xc_sic.F90).