@article{10_2298_FIL2210433B, author = {Noureddine Bouteraa}, title = {Positive periodic solutions of delay differential system at resonance}, journal = {Filomat}, pages = {3433 }, year = {2022}, volume = {36}, number = {10}, doi = {10.2298/FIL2210433B}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2210433B/} }