@article{10_4064_ap101_2_2,
     author = {Bingwen Liu},
     title = {Permanence for a delayed {Nicholson's} blowflies model with a nonlinear density-dependent mortality term},
     journal = {Annales Polonici Mathematici},
     pages = {123--129},
     publisher = {mathdoc},
     volume = {101},
     number = {2},
     year = {2011},
     doi = {10.4064/ap101-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap101-2-2/}
}