Ameti, Perparim, and Reiner Jager. “On the Definition of Height Reference Surfaces over an Arbitrary Selected Area by Means of DFHRS Approach”. Geodesy and Cartography 42, no. 4 (December 20, 2016): 115-121. Accessed December 23, 2024. https://transport.vilniustech.lt/index.php/GAC/article/view/2413.