Armstrong J.W.; Iess L.; Tortora P.; Bertotti B., Stochastic gravitational wave background: Upper limits in the 10 -6 to 10-3 Hz band, «THE ASTROPHYSICAL JOURNAL», 2003, 599, pp. 806 - 813 [Scientific article]
Bertotti B.; Iess L.; Tortora P., A test of general relativity using radio links with the Cassini spacecraft, «NATURE», 2003, 425, pp. 374 - 376 [Scientific article]
Iess L.; Tortora P.; Anderson J.D.; Asmar S.W.; Barbinis E.; Bertotti B.; Fleischman D.U.; Gatti M.S.; Goltz G.L.; Herrera R.G.; Lau E.; Oudrhiri K., The Cassini solar conjunction experiment: A new test of general relativity, in: 2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652), 2003, 1, pp. 205 - 211 (atti di: IEEE Aerospace Conference, Big Sky, 8-15 March 2003) [Contribution to conference proceedings]
Tortora P.; Troiani E., The microsatellite research program at Universita' di Bologna, in: 54th International Astronautical Congress of the International Astronautical Federation (IAF), the International Academy of Astronautics and the International Institute of Space Law, 2003, 2, pp. 2977 - 2984 (atti di: 54th International Astronautical Congress of the International Astronautical Federation (IAF), the International Academy of Astronautics and the International Institute of Space Law, Bremen, deu, 2003) [Contribution to conference proceedings]
Tortora P., GPS based attitude determination algorithm for the spin-stabilized microsatellite UNISAT, «ACTA ASTRONAUTICA», 2000, 47, pp. 139 - 146 [Scientific article]
Tortora P.; Oshman Y., Spacecraft angular rate estimation from magnetometer data only, in: Astrodynamics Specialist Conference, 2000, pp. 304 - 310 (atti di: Astrodynamics Specialist Conference 2000, Dever, CO, usa, 2000) [Contribution to conference proceedings]