resistors - 3mm different color LED resistances for bright light - Electrical Engineering Stack Exchange
Variations between operating current and half life time for green LED | Download Scientific Diagram
Guide to LED Circuit Designs and LED Basics & Operation | Analog Devices
Realization of Highly Efficient InGaN Green LEDs with Sandwich-like Multiple Quantum Well Structure: Role of Enhanced Interwell Carrier Transport | ACS Photonics
Amazon.com: ARLETA 10pcs Energy Saving LED Indicator Light Voltage 12V/24V/110V/120V Current 20mA Mounting Hole Size 22mm(7/8 Inch) Green Yellow Red Blue White : Industrial & Scientific
High-Efficiency Current Drive for High-Brightness LEDs