1. Adomavicius, G., Tuzhilin, A.: Toward the next generation of recommender systems: a survey of the state -of-the art and possible extensions IEEE Trans. Knowl. Data Eng. 17(6), 734–749 (2005)
2. Sree Lakshmi, S., Adi Lakshmi, T.: The survey of recommender systems. Int. J. Eng. Trends Technol. (IJETT) Special Issue (2017)
3. Ramakrishna Murty, M., Murthy, J.V.R., Prasad Reddy, P.V.G.D., Sapathy, S.C.: Performance of teaching learning based optimization algorithm with various teaching factor values for solving optimization problems. In: International Conference FICTA-13 at Bhuveneswar, Springer AISC (indexed by SCOPUS, ISI proceeding DBLP etc), vol. 247, pp. 207–216 (2013). ISBN 978-3-319-02931-3
4. Ramakrishna Murty, M., Murthy, J.V.R, Prasad Reddy, P.V.G.D., Satapathy, S.: Homogeneity separateness: a new validity measure for clustering problems. In: International Conference and Published the Proceedings in AISC and Computing, pp. 1–10. Springer, (indexed by SCOPUS, ISI proceeding DBLP etc) vol. 248 (2014). ISBN 978-3-319-03106
5. Cremonesi, P., Garzotto, F., Pagano, R., Quadrana, M.: Recommending without Short Head, www ’14 companion, April 7–11, 2014