Review: Panasonic 20mm f1.7 II (Micro Four Thirds)
Panasonic LUMIX G 20mm f1.7 and 20mm f1.7 II ASPH lens reviews: Has Panasonic improved its classic standard prime?
Panasonic Lumix G 20mm F1.7 ASPH Review: Digital Photography Review
The Panasonic Lumix G 20mm f/1.7 II ASPH Lens Review — Tools and Toys
Micro 4/3rds Photography: New Lumix 20mm lens: Better focus ring
PANASONIC LUMIX G II Lens, 20MM, F1.7 ASPH, MIRRORLESS Micro Four Thirds, H-H020AK (USA Black) : Compact System Camera Lenses : Electronics - Amazon.com
Panasonic Lumix 20mm f/1.7 Pancake Lens - The Newsprint
Panasonic Lumix G 20mm F1.7 ASPH Review - Thought By Tommy
BEJO Photography: The Primest of the Primes: Panasonic Lumix 20mm f/1.7 Mark II