http://tutvital.tut.ac.za:8080/vital/access/manager/Index ${session.getAttribute("locale")} 5 A new type of four-wing chaotic attractors in 3-D quadratic autonomous systems. http://tutvital.tut.ac.za:8080/vital/access/manager/Repository/tut:5312 Tue 11 May 2021 15:10:13 SAST ]]>