Publisher: MIT OpenCourseWare (institutional hosting/publishing platform).
Cited passages: §2.8.1, printed pp. 154–156, equations 2.406–2.413: uniaxial tensor and direction-dependent extraordinary index; §2.8.3, printed pp. 157–158, equations 2.414–2.419: Poynting direction and walk-off; §§2.8.2–2.8.3, printed p. 156, equations 2.410–2.413 and longitudinal electric-field discussion.