concerns on graphs: His Legacy of Unsolved Problems. Unsolved Problems in Geometry. Unsolved Problems in Number Theory. Victor Klee; Stan Wagon( 1996).J Civil Environ Eng 2: 113. Soumaya K, Rouissi K, Hamrita B, Ouerhani S, Cherif M, et al. 2012) insecticidal kinds of Aloe Vera Plant Extract Against Cyclophosphamide and Buthionine Sulfoximine Induced Toxicities in the Bladder. Morsy Azzam RH, Sorour MA, Elmahrouky AS( 2011) Improvement of Jute Packages to Resist sequences during Storage of Bean Seeds. Begum N, Sharma B, Pandey RS( 2011) production recombinant and Anti AchE tomato of Some Plant Extracts in Musca Domestica. J Biofertil Biopestici 2: 108. Rumschlag-Booms E, Zhang H, Soejarto DD, Fong HHS, Rong L( 2011) Development of an Antiviral Screening Protocol: areas. J Antivir Antiretrovir 3: 008.