Book excerpt: Papers on Matrix Representation of Biharmonic Curves in Terms of Exponential Maps in the Special Three-Dimensional φ−Ricci Symmetric Para-Sasakian Manifold, Combinatorial Aspects of a Measure of Rank Correlation Due to Kendall and its Relation to Complete Signed Digraphs, Super Mean Labeling of Some Classes of Graphs, and similar topics. Contributors: P. Siva Kota Reddy, K.M. Nagaraja, M.C. Geetha, A. Lourdusamy, S.S. Jeyaseelan, T. Mathivanan, M.K. Angel Jebitha, J. Paulraj Joseph, T.N. Pandey, V.K. Chaubey, Arunima Mishra, and others.