found:BGN 4-22-80(approved forms of name: Köln, Cologne [conventional]; variants: Cöln, Koeln, Oppidum Ubiorum, Colonia Agrippinensis, Augusta Ubiorum; 50°56ʹN, 6°57ʹE)
found:Stoll, D. Die Kölner Presse im 16. Jahrhundert, 1991:t.p. (Cöllen)
found:Okonchanie voĭny v Stalingrade i Kelʹne, 1943-1945, 1997.
found:Palazzeschi europeo : atti del Convegno internazionale di studi, Bonn-Colonia, 30-31 maggio 2005, c2007
found:Merkenich, H.G. Köln, 1975:view recto (Keulen)
found:GeoNames, algorithmically matched, 2009(ppl; 50°56ʹ00ʺN 006°57ʹ00ʺE)