Marc Ayats Plana has updated his TLUD Oven paper the latest results. You can download a copy here.
This Oven started out as an experiment in creating a low mass oven using a rocket style stove, and after some experimentation Marc switched to a TLUD style stove to improve the oven's efficiency and to also be able to use agricultural residues, almond shells, instead of wood. Please see the report for details.
And there is more on the Fogons Solares web site: