Ungar, Abraham A. Hyperbolic triangle centers : the special relativistic approach / A.A. Ungar.

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Ungar, Abraham A.

Hyperbolic triangle centers : the special relativistic approach / A.A. Ungar.

Geometry, Hyperbolic.

Special relativity (Physics)

Geometry, Hyperbolic. fast (OCoLC)fst00940922

Special relativity (Physics) fast (OCoLC)fst01128981