Buda-Prejbeanu, J. A. Katine, D. Mauri, A. Zeltser, M. Prigent, J. -C. Nallatamby and R. Sommet, “Amplitude and phase noise of magnetic tunnel junction oscillators,” *Appl. Phys. Lett.*, vol. 97, no. 18, p. 182507, 2010.

M. Takahashi, K. Ogawa, and K. Kundert, “VCO jitter simulation and its comparison with measurement,” in *Proc. of IEEE ASP-DAC*, 1999, pp. 85–88.

K. Kundert, and I. Clifford, “Achieving accurate results with a circuit simulator,” in *IEE Colloq. on SPICE: Surviving Problems in Circuit Evaluation*, 1993, pp. 1–5.

T. J. Silva, and M. W. Keller, “Theory of thermally induced phase noise in spin torque oscillators for a high-symmetry case,” *IEEE Trans. Magnetics*, vol. 46, no. 9, pp. 3555–3573, 2010.

Z. M. Zeng, P. Upadhyaya, P. K. Amiri, K. H. Cheung, J. A. Katine, J. Langer, K. L. Wang, and H. W. Jiang, “Enhancement of microwave emission in magnetic tunnel junction oscillators through in-plane field orientation,” *Appl. Phys. Lett.*, vol. 99. vol. 3, p. 032503, 2011.

P. Gangmei, A. Neudert, M. K. Marcham, R. J. Hicken, M. A. Gubbins, X. Cao, R. R. Lamberton, and A. B. Johnston, “Thermal and spin-transfer-torque excitation of precessional modes in magnetic tunnel junction nanopillars with symmetric interfaces and a thick 