Theory says you need a reflex airfoil. Practice says that is hard to manufacture. Instead, the PDF will show that twisting the wingtips down by 3-5 degrees (washout) achieves the same longitudinal stability without complex airfoils.
If an exact PDF with that title does not surface, compile your own binder using the following three open-access documents: tailless aircraft in theory and practice pdf
A tailless aircraft, as the name suggests, is an aircraft that does not have a traditional tail section. Instead, the control surfaces and stability requirements are integrated into the main wing or other parts of the aircraft. This design approach aims to reduce drag, weight, and complexity, while potentially improving performance, maneuverability, and efficiency. Theory says you need a reflex airfoil
For those interested in learning more about tailless aircraft, there are several resources available, including: If an exact PDF with that title does