Just FYI, but EFKE emulsions in many cases derive from EK and Agfa formulas, as there was a lot of Kodak and Agfa influence in the war years and before. These can be duplicated from the war time papers such as the BIOS reports.

There are pages of B&W and color formulas that are equivalent to those used by EFKE for some products and others are published in some detail by Baker, and refined versions are given in my book.