Frei Otto, Architect, Dies at 89; the Soap Bubble Was an Inspiration - The New York Times

Frei Otto wins 2015 Pritzker Prize, News

Frei Otto (1925-2015) - Architectural Review

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Frei Otto: a life in projects

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Pritzker Prize for Frei Otto, German Architect, Is Announced After

Frei Otto: the titan of tent architecture, Architecture

Pritzker Prize for Frei Otto, German Architect, Is Announced After His

Frei Otto, Master of Tensile Structures, Dies Day Before Winning