Abraham, Hrvoje
(with V. Kovac) From electrostatic potentials to yet another triangle center, 15 (2015) 73--89.
Abu-Saymeh, Sadi
(with M. Hajja) Triangle centers with linear intercepts and linear subangles, 5 (2005) 33--36.
(with M. Hajja) Some Brocard-like points of a triangle, 5 (2005) 65--74.
(with M. Hajja) Coincidence of centers for scalene triangles, 7 (2007) 137--146.
(with M. Hajja and H. A. ShahAli) Another variation of the Steiner-Lehmus theme, 8 (2008) 131--140.
Akengin, Mehmet Efe
(with Zeyd Yusuf Koroglu and Yigit Yargic) Three natural homoteties of the nine-point circle, 13 (2013) 209--218.
Alperin, Roger C.
A grand tour of pedals of conics, 4 (2004) 143--151.
The Poncelet pencil of rectangular hyperbolas, 10 (2010) 15--20.
Solving Euler's triangle problems with Poncelet's pencil, 11 (2011) 121--129.
Reflections on Poncelet's pencil, 15 (2015) 93--98.
Alsina, Claudi
(with R. B. Nelsen) A visual proof of the Erdos-Mordell inequality, 7 (2007) 99--102.
(with R. B. Nelsen) On the diagonals of a cyclic quadrilateral, 7 (2007) 147--149.
Altintas, Abdilkadir
Some collinearities in the heptagonal triangle, 16 (2016) 249--256.
Andrica, Dorin
(with D.-S. Marinescu) New interpolation inequalities to Euler's R >= 2r, 17 (2017) 149--156.
Anghel, Nicolae
Minimal chords in angular regions, 4 (2004) 111--115.
A maximal parallelogram characterization of ovals having circles as orthoptic curves, 10 (2010) 21--25.
Apostol, Tom M.
(with M. A. Mnatsakanian) The method of the punctured containers, 7 (2007) 33--52.
(with M. A. Mnatsakanian) Volumes of solids swept tangentially around cylinders, 15 (2015) 13--44.
(with M. A. Mnatsakanian) Volumes of solids swept tangentially around general surfaces, 15 (2015) 45--72.
(with M. A. Mnatsakanian) Topological treatment of Platonic, Archimedean, and related polyhedra, 15 (2015) 243--251.
Atzema, Eisso J.
A theorem by Giusto Bellavitis on a class of quadrilaterals, 6 (2006) 181--185.
An elementary proof of a theorem by Emelyanov, 8 (2008) 201--204.
On n-sections and reciprocal quadrilaterals, 9 (2009) 1--17.
On a flawed, 16th-century derivation of Brahmagupta's formula for the area of a cyclic quadrilateral, 15 (2015) 165--179.
Ayme, Jean-Louis
Sawayama and Thebault's theorem, 3 (2003) 225--229.
A purely synthetic proof of the Droz-Farny line theorem, 4 (2004) 219--224.
Azarian, Mohammed
A study of Risala al-Watar wa'l Jaib (The Treatise on the Chord and Sine), 15 (2015) 229--242.