Taghavi, A., R. Hosseinzadeh, and M. Yousefi. “Maps Preserving the Square Zero of η-Lie Product of Operators”. Proyecciones (Antofagasta, On Line), vol. 39, no. 3, June 2020, pp. 591-7, doi:10.22199/issn.0717-6279-2020-03-0036.