Realistic Glass Shader in Blender Eevee (Tutorial) - YouTube
Chocofur Chocofur 10 Glass Advanced Shader - Free Blender and Cycles Advanced Glass Shader created by Chocofur! Improve your interior visualization renderings using our Cycles shaders and textures.
How can I create a realistic glass material? - Blender Stack Exchange
Glass shader tuning for Cycles render engine
cycles render engine - Glass acting as a lens? - Blender Stack Exchange