Bahri, A. (2003). Flow lines and algebraic invariants in contact form geometry. Birkh�user.
Παραπομπή Chicago StyleBahri, Abbas. Flow Lines and Algebraic Invariants in Contact Form Geometry. Boston: Birkh�user, 2003.
Παραπομπή MLABahri, Abbas. Flow Lines and Algebraic Invariants in Contact Form Geometry. Birkh�user, 2003.
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