TY - JOUR AU - Hakeem A Othman AU - Ahmed Ayache AU - Amin Saif TI - On L 2 −directed topological spaces in directed graphs theory JO - Filomat PY - 2023 SP - 10005 VL - 37 IS - 29 UR - http://geodesic.mathdoc.fr/articles/10.2298/FIL2329005O/ DO - 10.2298/FIL2329005O LA - en ID - 10_2298_FIL2329005O ER -