Gray, K. (2014). A Long-duration Art Ensemble: Theatre of All Possibilities, Research Vessel Heraclitus, and Biosphere 2. The ethics of art : ecological turns in the performing arts.

Gray, Kathelin. "A Long-duration Art Ensemble: Theatre of All Possibilities, Research Vessel Heraclitus, and Biosphere 2." The Ethics of Art : Ecological Turns in the Performing Arts 2014.

Gray, Kathelin. "A Long-duration Art Ensemble: Theatre of All Possibilities, Research Vessel Heraclitus, and Biosphere 2." The Ethics of Art : Ecological Turns in the Performing Arts, 2014.