Limit Cycles and Local Bifurcation of Critical Periods in a Class of Switching <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M1"><a:msub><a:mrow><a:mi>Z</a:mi></a:mrow><a:mrow><a:mn>2</a:mn></a:mrow></a:msub></a:math> Equivariant Quartic System
Discrete dynamics in nature and society