Does anyone know any literature that demonstrates the structure factors or allowed reflections for tetragonal and orthorhombic crystal structures?

I am indexing TEM SADPs for an Al-Cu-Mg-Ag alloy with tetragonal and orthorhombic precipitate super lattice reflections.  In order to differentiate the precipitate phases correctly, I need to know...

11 November 2016 3,966 3 View