Ukrainian Journal of Nephrology and Dialysis, vol.4, no.68, pp.29-37, 2020 (Peer-Reviewed Journal)
We prove that a K3 quartic surface defined over a field of characteristic 2 can contain at most 68 lines. If it contains 68 lines, then it is projectively equivalent to a member of a 1-dimensional family found by Rams and Sch\"utt.