TY - JOUR A1 - Vollmer, Michael T1 - Below the horizon-the physics of extreme visual ranges T2 - Applied Optics Y1 - 2021 UR - https://opus4.kobv.de/opus4-fhbrb/frontdoor/index/index/docId/2708 VL - 59 IS - 21 SP - F11 EP - F19 PB - Optica Publishing Group ER -