@article{article47d65bf4, title = {Classification of linear operators satisfying (Au,v)=(u,Av) or (Au,Av)=(u,v) on a vector space with indefinite scalar product}, author = {Borges, Victor Senoguchi and Kashuba, Iryna and Sergeichuk, Vladimir V. and Sodré, Eduardo Ventilari and Zaidan, André}, year = {2021}, doi = {10.1016/j.laa.2020.12.005}, journal = {Linear Algebra and its Applications} }