Smith, A. and Raven, R. 2012. What is protective space? Reconsidering niches in transitions to sustainability. Research Policy, Vol. 41, pp.1025-36.
according to Smith and Raven, effective protection has three properties – shielding, nurturing, empowerment.
See also niches, path creation etc protected space – how different?? Strategic Niche Management etc
marchudson.net 