Kogan, A. (1998). "Direct solar thermal splitting of water and on-site separation of the products - II. Experimental feasibility study". International Journal of Hydrogen Energy. 23 (2). Great Britain: Elsevier Science Ltd: 89–98. Bibcode:1998IJHE...23...89K. doi:10.1016/S0360-3199(97)00038-4.
Kogan, A. (1998). "Direct solar thermal splitting of water and on-site separation of the products - II. Experimental feasibility study". International Journal of Hydrogen Energy. 23 (2). Great Britain: Elsevier Science Ltd: 89–98. Bibcode:1998IJHE...23...89K. doi:10.1016/S0360-3199(97)00038-4.