1 L.M. Nelson, K.M. Larson, and J.. Levine, Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) 1023, (1999).
1 K.M. Larson, and J.. Levine, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 46, (1999).
1 K.M. Larson, and J.. Levine, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 45, (1998).
1 K.M. Larson, J.. Levine, L.M. Nelson, and T.E. Parker, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 47, (2000).