@article{MM2_1990__66_1_155466,
     author = {W.L. Chan and Guo Bao Zhu},
     title = {On the semigroups of age-size dependent population dynamcis with spatial diffusion.},
     journal = {Manuscripta mathematica},
     pages = {161--182},
     publisher = {mathdoc},
     volume = {66},
     number = {1},
     year = {1990},
     zbl = {0698.92021},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__66_1_155466/}
}