Solar energy conversion using powder materials : a new technology to save our climateMeissner, DieterInternational Conference On Renewable Energy (INCORE 2016) : book of programme and abstract2016 / p. 14 Teaching sustainable energeticsMeissner, Dieter; Burk, Peeter; Koppel, Ilmar; Lust, Enn; Mellikov, Enn; Öpik, AndresInternational Conference On Renewable Energy (INCORE 2016) : book of programme and abstract2016 / p. 13