@article{10_2298_FIL2114613P,
     author = {Pedro Patr{\'\i}cio and Robert E Hartwig},
     title = {From {Euclid} to corner sums {\textendash} a trail of telescoping tricks},
     journal = {Filomat},
     pages = {4613 },
     year = {2021},
     volume = {35},
     number = {14},
     doi = {10.2298/FIL2114613P},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2114613P/}
}