Paracrystal models

I am trying to use the paracrystal models in the software. However  I am not sure I understand all the parameters that popup with that interference function. Could you please direct me to the formula being used for the paracrystal models ? 

 

 

We are currently working on documenting the different interference functions and their parameters. This information will appear on the website in the coming weeks. In the meantime, you can check section 2.5.3 of the next paper: http://journals.iucr.org/j/issues/2002/04/00/vi0158/vi0158.pdf This paper basically contains the formulas we use for the paracrystal interference function. Please let me know if you need more information.

Thanks!