Generalisasi teorema menelaus dan teorema ceva pada poligon di bidang euclid

Sifat Kelengkapan dan Isometri pada Modul-Z Bernorm = Completeness and Isometries on Normed Z-modules

Sphere of influence Rusia di kawasan Asia Tengah pasca runtuhnya Uni Soviet = Russia s sphere of influence in central Asia after the dissolution of Soviet Union / Gayuh Tyagita

Geometry /Edwin E. Moise and Floyd L. Downs, Jr.

The methods of plane projective geometry based on the use of general homogeneous coordinates/by E. A. Maxwell.