Ozelsel, Michaela M., Forty days : the diary of a traditional solitary Sufi retreat with an accompanying interdisciplinary scientific commentary / 40 days Michaela M. Özelsel ; introduction by Annemarie Schimmel ; translated by Andy Gaus. - xv, 224 pages ; 23 cm. Includes bibliographical references. ISBN: 0939660520 Hadiah LCCN: 96-060033 Subjects--Personal Names: Ozelsel, Michaela M.--Diaries. Subjects--Topical Terms: Sufism--Diaries.