High-J CO emission in the Cepheus E protostellar outflow observed with SOFIA/GREATA. I. Gómez-Ruiz, A. Gusdorf, S. Leurini, C. Codella, R. Güsten, F. Wyrowski, M. A. Requena-Torres, C. Risacher and S. F. WampflerA&A, 542 (2012) L9DOI: https://doi.org/10.1051/0004-6361/201218936