Update README.md

reference my dissertation

README.md

@@ -2,6 +2,11 @@
 [![Documenter](https://github.com/rwth-irt/SciGL.jl/actions/workflows/documenter.yml/badge.svg)](https://github.com/rwth-irt/SciGL.jl/actions/workflows/documenter.yml)
 [![](https://img.shields.io/badge/docs-stable-blue.svg)](https://rwth-irt.github.io/SciGL.jl)
 
+# About
+This code has been produced during while writing my Ph.D. (Dr.-Ing.) thesis at the institut of automatic control, RWTH Aachen University.
+If you find it helpful for your research please cite this:
+> T. Redick, „Bayesian inference for CAD-based pose estimation on depth images for robotic manipulation“, RWTH Aachen University, 2024. doi: 10.18154/RWTH-2024-04533.
+
 # SciGL.jl
 Port of [scigl_render](https://gitlab.com/rwth-irt-public/flirt/scigl_render) to julia.