@article{JGG_2023_27_2_JGG_2023_27_2_a4,
     author = {O. T. Pop and M. Dalc{\'\i}n },
     title = {Equalities and {Inequalities} in the {Excircle} {Quadrilateral} of a {Convex} {Quadrilateral}},
     journal = {Journal for geometry and graphics},
     pages = {171--179},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {2023},
     url = {http://geodesic.mathdoc.fr/item/JGG_2023_27_2_JGG_2023_27_2_a4/}
}