TY - RPRT TI - Cosmology of the string derived flipped SU(5) AU - Antoniadis, I. AU - Nanopoulos, D. V. AU - Rizos, J. PY - 2021 DO - 10.1088/1475-7516/2021/03/017 UR - https://www.osti.gov/biblio/1851444 ID - 1851444 ER -