Armstrong, W. Smart Structures and Materials 2006: Active Materials: Behavior and Mechanics. SPIE Digital Library.
Lua i Stíl Chicago (17ú heag.)Armstrong, William. Smart Structures and Materials 2006: Active Materials: Behavior and Mechanics. SPIE Digital Library.
Lua MLA (8ú heag.)Armstrong, William. Smart Structures and Materials 2006: Active Materials: Behavior and Mechanics. SPIE Digital Library.
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