11 Elements of music such as pitch, duration and timbre combine into small elements like motifs and phrases, and these in turn combine in larger structures.Handbook of data structures and applications.

23 A high redundancy is an essential part of the design of several systems in the Space Shuttle.Dmitri Kireev, in Press, Corrected Proof, Available online Purchase PDF.

Cambridge: Cambridge University Press.In a valid deduction, the conclusion necessarily follows from the premises, regardless of whether they are true or not.In Press, Corrected Proof, Available online Purchase PDF, research articleAbstract only, structural Basis for YjbH Adaptor-Mediated Recognition of Transcription Factor Spx.