Area-Lights

• This scratchapixel articel (and the following ones) by Jean-Colas Prunier
• The respective section from Physically Based Rendering - From Theory to Implementation (4th Edition) by Matt Pharr, Wenzel Jakob, and Greg Humphreys. (referred to as "PBR-Book" in the following)

Depth of Field

• The respective section in the PBR-Book
• This blog post by Anjana & Karishma at UT Austin

Normal Mapping

• The respective section in the PBR-Book

Alpha Mapping

• The respective section in the PBR-Book

Denoising

• The documentation of Intel® Open Image Denoise
• The hemisperical reflectance logic from the PBR-Book

Bloom

• This article by Alexander Christensen

AGX Tonemapping

• This blog post by Benjamin Wrensch

Models

• The Armored Adventurer by AnonmalyFound (CC0)
• Tall Forest Ferm and Small Ground Fern by Crazy0_0Cat (RF)
• Weed and Dandelion by Slinc_HD (CC0)
• Young Lemon Sprout by Rex Hans (RF)
• Witcher Steel Sword by Caner Boyraz (RF)
• Animated Fire Sprite by Matthew Ames (RF)

Materials

• Procedural Obsidian by ZeroVert miky (RF)
• Rock With Moss by chroma 3D (RF)
• Moss by James Middleton (RF)

• Html5 "Helios" Template by html5up.net (CCA 3.0)
• The twentytwenty jQuery image slider plugin by zurb (MIT)