Kj. Dykema et M. Rordam, PURELY INFINITE, SIMPLE C-ASTERISK-ALGEBRAS ARISING FROM FREE PRODUCTCONSTRUCTIONS, Canadian journal of mathematics, 50(2), 1998, pp. 323-341
Examples of simple, separable, unital, purely infinite C-algebras are
constructed, including: (1) some that are not approximately divisible;
(2) those that arise as crossed products of any of a certain class of
C-algebras by any of a certain class of non-unital endomorphisms; (3
) those that arise as reduced free products of pairs of C-algebras wi
th respect to any from a certain class of states.