López-Sáez J.A, López-García P., Pozuelo R., Mateo M.A, Renom P., Garrido D..  2006.  Non-pollen palynomorphs from organic deposits of Posidonia oceanica: a new tool for palaeoenvironmental studies in marine peat-like deposits. Palyno-Bulletin. 2(1-4):38-40.