@article{JGG_2019_23_2_JGG_2019_23_2_a12,
     author = {Y. Zhang and X. Zhang and J. Li and S. Liu },
     title = {Project-Based {Integrated} {Practice} of {Engineering} {Graphics} under {Different} {Task} {Systems}},
     journal = {Journal for geometry and graphics},
     pages = {269--274},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {2019},
     url = {http://geodesic.mathdoc.fr/item/JGG_2019_23_2_JGG_2019_23_2_a12/}
}