Grzegorz Grunwald, Adam Ciećko, Kamil Krasuski, Rafał Kaźmierczak. The GPS / EGNOS Positioning Quality in APV-1 and LPV-200 flight procedures. Communications [Internet]. 2021Apr.1 [cited 2026Apr.5];23(2):E23-E34. Available from: http://journals.uniza.sk/index.php/communications/article/view/1679