File:Sierpinski square steps.gif - Wikimedia Commons

File:Rep-tile triangle creating Sierpinski carpet.gif - Wikipedia

Sierpinski triangle/Graphical - Rosetta Code

GitHub - discretegames/TurtLSystems: Highly customizable tool for generating pngs and gifs of fractals and other patterns created by Lindenmayer systems.

Finite Subdivision Rule: Most Up-to-Date Encyclopedia, News & Reviews

graphs Math Munch

File:Sierpinski square.png - Wikimedia Commons

File:Sierpinski.gif - Wikimedia Commons

What is a Fractal? Let's Talk Science

Turbulence-induced clustering in compressible active fluids - Soft Matter (RSC Publishing) DOI:10.1039/D1SM01276B

Influence of Anatomy, Microstructure, and Composition of Natural Fibers on the Performance of Thermal Insulation Panels

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File:Sierpinski arrowhead steps.gif - Wikimedia Commons

File:Sierpiński triangle transforming into a T-square fractal.gif - Wikipedia