Bilici, M., ERGUN, E. and Calisken, M. 2013. The Natural Lift Curve and Geodesic Sprays in Euclidean 4-Space. JOURNAL OF ADVANCES IN MATHEMATICS. 5, 1 (Dec. 2013), 570–574. DOI:https://doi.org/10.24297/jam.v5i1.3668.