Title	Image Retrieval Based on P2-Invariant
Author	Ruihang Wu Author, Shaozi Lir Author, Fengmei Zou Author
Citation	Vol. 6  No. 8  pp. 79-84
Keywords	P2-invariant, cross ratio, feature correspondence, projective geometry.

Title	Fault Tolerant Projective Geometry Based Low Density Parity Check Code Decoder
Author	B.Venkateshulu, B.Suryanarayana Adiga, B.C.Jinaga
Citation	Vol. 11  No. 6  pp. 98-104
Keywords	LDPC Decoder, Perfect Difference Set, Projective Geometry, Perfect Difference Network(PDN), 0?free PDN