A construction of directed strongly regular graphs with parameters (63,11,8,1,2)

In this paper, we prove the existence of directed strongly regular graphs with parameters $(63,11,8,1,2)$. We construct a pair of nonisomorphic dsrg(63,11,8,1,2), where one is obtained from the other by reversing all arrows. Both directed strongly regular graphs have $L_2(8):3$ as the full automorphism group.