The density matrix for mixed state qubits and hyperbolic geometry. - Abraham Albert Ungar (Quantum Inf. Comput., 2002)

Einstein's velocity addition law and its hyperbolic geometry. - Abraham Albert Ungar (Comput. Math. Appl., 2007)

From Möbius to Gyrogroups. - Abraham Albert Ungar (Am. Math. Mon., 2008)

A Gyrovector Space Approach to Hyperbolic Geometry - Abraham Albert Ungar (Morgan & Claypool Publishers, 2009)

Binary Operations in the Unit Ball: A Differential Geometry Approach. - Nikita E. Barabanov; Abraham A. Ungar (Symmetry, 2020)

Differential Geometry and Binary Operations. - Nikita E. Barabanov; Abraham A. Ungar (Symmetry, 2020)

A Spacetime Symmetry Approach to Relativistic Quantum Multi-Particle Entanglement. - Abraham A. Ungar (Symmetry, 2020)

Construction of 2-Gyrogroups in Which Every Proper Subgyrogroup Is Either a Cyclic or a Dihedral Group. - Soheila Mahdavi; Ali Reza Ashrafi; Mohammad Ali Salahshour; Abraham Albert Ungar (Symmetry, 2021)

Special Issue Editorial: "Symmetry and Geometry in Physics". - Abraham A. Ungar (Symmetry, 2022)

Ptolemy's Theorem in the Relativistic Model of Analytic Hyperbolic Geometry. - Abraham A. Ungar (Symmetry, 2023)

The Hyperbolic Ptolemy's Theorem in the Poincaré Ball Model of Analytic Hyperbolic Geometry. - Abraham A. Ungar (Symmetry, 2023)

When Four Cyclic Antipodal Pairs Are Ordered Counterclockwise in Euclidean and Hyperbolic Geometry. - Abraham A. Ungar (Symmetry, 2024)