TY - JOUR KW - paper AU - Hannes Hübener AU - Eleonora Luppi AU - Valérie Véniard BT - Phys. Rev. B DA - Mar DO - 10.1103/PhysRevB.83.115205 M1 - 11 PB - American Physical Society PY - 2011 EP - 115205 T2 - Phys. Rev. B TI - Ab initio calculation of many-body effects on the second-harmonic generation spectra of hexagonal SiC polytypes VL - 83 ER -