Two pairs of heteroclinic orbits coined in a new sub-quadratic Lorenz-like system Haijun Wang, Guiyao Ke, Jun Pan, Feiyu Hu, Hongdan Fan and Qifang Su Eur. Phys. J. B, 96 3 (2023) 28 Published online: 05 March 2023 DOI: 10.1140/epjb/s10051-023-00491-5