M. R. Douglas

Small instantons, del Pezzo surfaces and type I′ theory

S. Katz, C. Vafa, C. Vafa, 1996, hep-th/9609071.

Chirality change in string theory

M. R. Douglas, C-G. Zhou, 2004, hep-th/0403018.

RUNHETC-2004-05 UK / 04-04 Chirality Change in String Theory

M. R. Douglas, Chengang Zhou, 2004 .