@article{10_4153_CJM_1967_045_5,
     author = {Bollob\'as, B\'ela},
     title = {An {Extremal} {Problem} for {Polygons} {Inscribed} in a {Convex} {Curve}},
     journal = {Canadian journal of mathematics},
     pages = {523--528},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-045-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-045-5/}
}