M.Julian Marles
Just be sure to use the proper factory parts for waffle zimmerit😉

H K
Waffel pattern= Alkett factory. If you intend to build a lot of Stugs ( and you will * waves hand* 😄) then I highly recommend the Müller/ Zimmermann books especially volume two
edit: The scalemates link doesn't work. You can find it under Books- Stug in german and english.