Read about Contact “Bounce” (Switches) in our free Electronics Textbook
Reed Switches and Dynamic Contact Resistance - Standex Electronics
How to Switch De-bounce an Electronic Circuit - Circuit Basics
SN015: Contact debounce circuit for switches - element14 Community
Why is a flip-flop toggle unreliable when an SPDT switch is directly wired to the clock input of a 74LS76 JK flip flop? - Quora
1. Essential Concepts - Applied Embedded Electronics [Book]
Preventing Switch Bounce in Low-profile Keypad Assemblies
SN015: Contact debounce circuit for switches - element14 Community
Interfacing Switches and Relays to the Real World in Real Time
Embed With Elliot: Debounce Your Noisy Buttons, Part I
L3: Debouncing - Physical Computing