Higuera-Martínez, O. I. (2010). Discrete-time model for variable structure systems. Universidad Pedagógica y Tecnológica de Colombia - UPTC.
Chicago Style (17. basım) AtıfHiguera-Martínez, Oscar Iván. Discrete-time Model for Variable Structure Systems. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2010.
MLA (9th ed.) AtıfHiguera-Martínez, Oscar Iván. Discrete-time Model for Variable Structure Systems. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2010.
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