Symbology Development for a 3D Conformal Synthetic Vision Helmet-Mounted Display for Helicopter Operations in Degraded Visual Environment. - Patrizia Knabl; Helmut Többen (HCI (16), 2013)

Designing an obstacle display for helicopter operations in degraded visual environment. - Patrizia Knabl; Niklas Peinecke (Human Vision and Electronic Imaging, 2013)