1. Fay Chang, Jeffrey Dean, Sanjay Ghemawat, Wilson C. Hsieh, Deborah A. Wallach.
2. Mike Burrows, Tushar Chandra, Andrew Fikes, Robert E. Gruber (2006). Bigtable: A Distributed Storage System for Structured Data, http://static.googleusercontent.com/media/research.google.com/en//archive/bigtable-osdi06.pdf.
3. Datastax documentation: CQL for Cassandra 2.1. Restrictions on the use of conditions, http://docs.datastax.com/en/cql/3.1/cql/cql_reference/select_r.html.
4. Django Documentation: Django Software Foundation (2015), https://media.readthedocs.org/pdf/django/latest/django.pdf.
5. A Klimentov, P Buncic, K De, S Jha, T Maeno, R Mount, P Nilsson, D Oleynik, S Panitkin, A Petrosyan, R J Porter, K F Read, A Vaniachine, J C Wells and T Wenaus (2015). Next Generation Workload Management System For Big Data on Heterogeneous Distributed Computing //Journal of Physics: Conference Series, Volume 608, conference 1.