1. Stock Exchange. Oxford University Press, oed online edn.
http://www.oed.com.proxy-bc.researchport.umd.edu/view/Entry/190617?rskey=9zzLVE&result=2
2. Consumer spending on vehicles averaged 8427 in 2016, September 2017.
https://www.bls.gov/opub/ted/2017/consumer-spending-on-vehicles-averaged-8427-in-2016.htm
3. Table 1. Median usual weekly earnings of full-time wage and salary workers by sex, quarterly averages, seasonally adjusted, October 2018.
https://www.bls.gov/news.release/wkyeng.t01.htm
4. Abeywickrama, D.B., Bicocchi, N., Zambonelli, F.: SOTA: towards a general model for self-adaptive systems. In: Reddy, S., Drira, K. (eds.) WETICE, pp. 48–53. IEEE Computer Society (2012)
5. Andres Figliozzi, M., Mahmassani, H., Jaillet, P.: Framework for study of carrier strategies in auction-based transportation marketplace. Transp. Res. Rec. J. Transp. Res. Board 1854, 162–170 (2003)