Tactile Response and How it Works - Silicone Technology Corporation
Force-travel characteristic - Shin-Etsu Polymer Europe B.V.
Mechanical keyboards - InstallGentoo Wiki
How much actuation force is required for a membrane keyboard? - Peripherals - Linus Tech Tips
How to reproduce this rubberdome force curve in a mech. switch?
Tactility on Keyboards - Ergopedia.ca, the Ergonomic Encyclopedia
Tactility - Deskthority wiki
Silicone Rubber Keypad Assemblies - Pannam
Rubber domes – Telcontar.net
Membrane keyboard - Deskthority wiki
Mechanical Switches: How to Choose - RTINGS.com
Rubber Keyboard Actuation Force-The most important design tip
Beginner's guide to mechanical keyboards: Switches, form-factors, keycaps, and more | XDA Forums
A Helpful Guide: How To Choose Mechanical Keyboard Switches – epomaker
Mechanical Keyboard FAQs
Interesting rubber dome
Different keyboard switches explained - ProSettings.net
Comprehensive list of every single keyboard switch on the Planet - Switch and Click
Rubber domes – Telcontar.net
They must've took it apart, saw membranes, and a rubber sheet… I think they were thinking of Fujitsu Peerless which used springs over rubber domes in a BS-type fashion. : r/MechanicalKeyboards
How does rubber dome work - Membrane Tactile & Dome Switches
Comparing Mechanical, Membrane and Scissor-Switch Membrane Keyboards - Ergopedia.ca, the Ergonomic Encyclopedia
Everything You Need to Know About Membrane Keyboard Actuation Force - Dongguan Niceone Electronics Technology Co., Ltd
A Guide For Building Rubber Dome Keyboards | Hackaday
Flat keyboard with the shortest travel distance and lowest actuation force possible - Hardware Recommendations Stack Exchange