Don't get this Wrong! Stacking Fuzz pedals the Right way. - YouTube
Looking for advice stacking OD/distortion/fuzz : r/guitarpedals
Workshop: Overdrive und Verzerrerpedale Stacking - AMAZONA.de
Stacking Distortions | Hochstrasser Electronics
Psycho Andy Deluxe - Dual Distortion / Fuzz Pedal – Escape Plan Pedals
Guitar Pedal X - GPX Blog - 4 of the Best Stackable Overdrive + Distortion Multidrive Pedals
Guitar Pedal X - News - A Brief Hobbyist Primer on Key Tone Stack Types and Circuit EQ Configurations - in collaboration with Master-Builder Adrian 'Thorpy' Thorpe
STACK 'EM UP: HOW TO COMBINE OVERDRIVE, DISTORTION, & FUZZ - Lifestyle - Dunlop
Gain stacking: all about stacking gain pedals - Pedaltown