@article{UMJ_2022_8_2_a5,
     author = {Rabah Khemis and Abdelouaheb Ardjouni and Ahl\'eme Bouakkaz},
     title = {Periodic solutions of a class of second order neutral differential equations with multiple different delays},
     journal = {Ural mathematical journal},
     pages = {71--80},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UMJ_2022_8_2_a5/}
}