Overturf, Michael C., Wojciech M. Chrosny, and Richard G. Stine. 2011. “Energy Sufficiency Kaizen Achieving Zero Energy Cost and Variance With Sufficiency-Inclu- Sive Private Energy Portfolios”. Distributed Generation &Amp; Alternative Energy Journal 26 (4):36-56. https://doi.org/10.13052/dgaej2156-3306.2643.