Voigtländer Vito (English Wikipedia)

Elek, Mike. "Voigtlander Vito III". Mike Elek Classic Cameras. Retrieved 13 June 2023.
Elek, Mike. "Balda CE 35". Mike Elek Classic Cameras. Retrieved 13 June 2023.
Elek, Mike. "Farewell, Zeiss Ikon". Mike Elek's Classic Cameras. Retrieved 13 June 2023.

espacenet.com

US Patent 2573511, Albrecht Wilhelm Tronnier, "Four-lens photographic objective", published October 30, 1951
US Patent 2649023, Albrecht Wilhelm Tronnier, "Modified Gauss-type four-component photographic objective", published August 18, 1953

"Voigtländer: known the world over (brochure)" (PDF). Pacific Rim Camera, Reference Library. Voigtländer. Retrieved 4 May 2023.
"Vito 24×36: Die Allfilm-Allfarben-Kleinbild von Voigtländer" (PDF). Pacific Rim Camera, Reference Library (in German). Voigtländer. Retrieved 3 May 2023.
"Cameras from Voigtländer: because the lens is so good" (PDF). Pacific Rim Camera, Reference Library. Voigtländer. 1953. Retrieved 3 May 2023.
"Voigtländer Cameras and Equipment (brochure)" (PDF). Pacific Rim Camera, Reference Library. Voigtländer.
"Voigtländer Vito B: Quick, Handy, and Elegant (brochure)" (PDF). Pacific Rim Camera, Reference Library. Voigtländer.
"Rollei XF35" (PDF). Pacific Rim Camera, Reference Library. Rollei of America.
"Revolutionary new Vitomatic I and II: cameras with built-in coupled light meters" (PDF). Pacific Rim Camera, Reference Library. Voigtländer.
"Vitomatic brief instructions: Look — Turn and Shoot" (PDF). Pacific Rim Camera, Reference Library. Voigtländer. December 1959.
"Voigtländer Vitomatic I | Vitomatic II: Nur sehen, nur drehen (brochure)" (PDF). Pacific Rim Camera, Reference Library (in German). Voigtländer.
"Voigtländer cameras and accessories" (PDF). Pacific Rim Camera, Reference Library. Sawyer's, Inc.
"Vito automatic: Instructions for use" (PDF). Pacific Rim Camera, Reference Library. Voigtländer.

"Vito Balda Series (1981–1985)". Voigtländer Camera Collection. Retrieved 12 June 2023.
"Vito C series (1960–1966)". Voigtländer Camera Collection. Retrieved 12 June 2023.
"VF Series (1974–1981)". Voigtländer Camera Collection. Retrieved 12 June 2023.
"Vitomatic Series". Voigtländer Camera Collection. Retrieved 12 June 2023.
"Vito Automatic series". Voigtländer Camera Collection. Retrieved 12 June 2023.
"Vitoret Series". Voigtländer Camera Collection. Retrieved 12 June 2023.
"Vitoret 110 Series". Voigtländer Camera Collection. Retrieved 12 June 2023.