Algorithm behind BRepBuilderAPI_MakeSolid

Hello,

I'm using BRepBuilderAPI_Sewing and BRepBuilderAPI_MakeSolid to create solids out of a polygon mesh. My code works perfectly, thank you for that great product.

The prototype I'm working on is part of scientific work, so it would be great if I can get some information about the algorithms behind ​BRepBuilderAPI_Sewing and BRepBuilderAPI_MakeSolid. 

Are there any descriptions available on the web how the algorithms work?

Thanks in advance,

Christoph