- P.A.S.D. Perera, G.S. Wijesiri, Encryption and Decryption Algorithms in Symmetric Key Cryptography Using Graph Theory, Psychology and Education Journal, Vol. 58 No 1(2021), 3420-3427.
- W.W.P.M.T.M. Karunasena, G.S. Wijesiri, Application of Graph Theory in DNA similarity analysis of Evolutionary Closed Species, Psychology and Education Journal, Vol. 58 No 1(2021), 3428-3434.
- P.A.S.D. Perera, G.S. Wijesiri, Encryption Algorithms using Graph Theory in Symmetric Cryptography for providing better Data Security, Postgraduate Institute of Science Research Congress, University of Peradeniya, 2020, Page no.107
- W.W.P.M.T.M. Karunasena, G.S. Wijesiri, A Study of DNA Similarity Analysis in Evolutionary relationship using Graph Theory, Postgraduate Institute of Science Research Congress, University of Peradeniya, 2020, Page no 108
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Kavirathne S.D., Wijesiri G.S., Optimal Performable Green Light Assignment of a Traffic Intersection using Maximal Independent Independent Vector Set of a Graph, Proceedings of the 12th International Research Conference of Kothalawala Defence University, Sri Lanka, 2019.
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Kavirathne S.D., Wijesiri G.S., Optimal Feasible Green Light Assignment to a Traffic Intersection using Graph theory, Asia International Conference on Multidisciplinary Research, 2019.
- Nisansala A., Wijesiri G.S., Scalar and Multi-Scalar Addition chain in Elliptic curve cryptography, ICACT 2019, Faculty of Computing & Technology, University of Kelaniya, Sri Lanka.
- Sandamali N.P.A.A., Wijesiri G.S., Scalar and multi-scalar multiplication in Elliptic Curve Cryptography using Fibonacci numbers, International Research Symposium on Pure and Applied Sciences, 2018, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2018.
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- Karunathilaka N.G.A., Panda S., Mallawaarachchi D.K., Wijesiri, G.S., Hansameenu W.T.P., Modeling Non-Isothermal wire-coating from a bath using Giesekus fluid, International Research Symposium on Pure and Applied Sciences, 2017, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2017.
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- Kolombage K.A.D.D.B.V, Wijesiri G.S., An investigation of properties of prime graph of non-commutative rings, Annual Session of SLAAS 2017.
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- Kolombage K.A.D.D.B.V, Wijesiri G.S., The chromatic number of prime graph of a noncommutative ring Mn×n (Ζ2), International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2016.
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- Perera P.S.L., Wijesiri G.S., A masking method for resisting key attacks on AES, International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2016.
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- G. Wijesiri, Thetanulls of cyclic curves of genus 4, Annual research symposium, FGS, University of Kelaniya, Kelaniya,2013
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- T. Shaska, C. Shor, G. S. Wijesiri, Codes over rings of size p2 and lattices over imaginary quadratic fields, Finite Fields Appl. 16 (2010) no. 2, 75--87.
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- E. Previato, T. Shaska, G. wijesiri, Theta nulls of cyclic curves with automorphisms, Algebraic aspects of digital communications, NATO Sci. Peace Secur. Ser. D. Inf. Commun. Secur., 24, IOS, Amsterdam, 2009, 193-237
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- T. Shaska, G. S. Wijesiri, S. Wolf, L. Woodland, Degree 4 coverings of elliptic curves by genus 2, Albanian J. Math. Vol.2, (2008), No. 4, 307-318.
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- T. Shaska, G. Wijesiri, Codes over rings of size four, Hermitian lattices and corresponding theta functions, Proc. Amer.Mathe. Soc., 136 (2008), no.3, 849-857.
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- E. Previato, T. Shaska, G. s. Wijesiri, Theta nulls of cyclic curves of small genus, Albanian J. Math. Vol. 1, No. 4, 2007, 253-270.
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