@article{JGG_2021_25_1_JGG_2021_25_1_a6,
     author = {T. H. S. Li },
     title = {On {Pepe} {Trapezoids}},
     journal = {Journal for geometry and graphics},
     pages = {71--78},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {2021},
     url = {http://geodesic.mathdoc.fr/item/JGG_2021_25_1_JGG_2021_25_1_a6/}
}