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# Four-wing chaotic attractor a= 0.2,b= -0.01,c= 1.0,d= -0.4,e= -1.0,f= -1.0 dx/dt = a*x + c*y*z dy/dt = b*x + d*y - x*z dz/dt = e*z + f*x*y ## References >Zenghui Wang, Yanxia Sun, Barend Jacobus van Wyk, >Guoyuan Qi, Michael Antonie van Wyk. >"A 3-D four-wing attractor and its analysis" >Braz. J. Phys. vol.39 no.3 São Paulo Sept. 2009 >https://www.researchgate.net/publication/242674950