@article{CSIS_2021_18_4_a13,
     author = {Yiman Zhang},
     title = {The {Application} of {E-commerce} {Recommendation} {System} in {Smart} {Cities} based on {Big} {Data} and {Cloud} {Computing}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {2021},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2021_18_4_a13/}
}