N. H. van der Blij, etal, “A State-Space Approach to Modelling DC Distribution Systems,” IEEE Transactions on Power Systems, vol. PP, no. 99, pp. 1–1, 2017.
 N. H. van der Blij, etal, “Stability of DC Distribution Systems: An Algebraic Derivation,” Energies – Special Issue on DC Systems
, Accepted 2017. See Online: http://www.mdpi.com/1996-1073/10/9/1412
 Gabriel Tibola, et al, “Isolated Bidirectional DC-DC Converter for Interfacing Local Storage in Two-Phase DC Grids”, 8th International Symposium on Power Electronics for Distributed Generation Systems, Jun 2017. See Online: http://ieeexplore.ieee.org/document/7972440/