@article{ARM_2006__42_1_a0,
     author = {Guo, Cheng-Jun and Wang, Gen-Qiang and Cheng, Sui-Sun},
     title = {Periodic solutions for a neutral functional differential equation with multiple variable lags},
     journal = {Archivum mathematicum},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {2006},
     mrnumber = {2227107},
     zbl = {1164.34517},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2006__42_1_a0/}
}