I am trying to get a better understanding of "real" $C^*$-algebras. I encountered them in the paper
Roughly speaking, these "real" $C^*$-algebras are complexifications of real $C^*$-algebras. They are defined as complex $C^*$-algebras equipped with an additional antilinear multiplicative involution.
I would be grateful for any pointers to additional literature on these algebras. (The quotation marks and the star in their name make it more tricky to find them with google...).