Sperl, M., Chang, A., Weber, N., & Hubler, A. (1999). Hebbian learning in the agglomeration of conducting particles. Phys. Rev. E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics), 59(3), 3165–3168.

Sperl, M., A. Chang, N. Weber, and A. Hubler. “Hebbian learning in the agglomeration of conducting particles.” Phys. Rev. E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics) 59, no. 3 (1999): 3165–68.

Sperl M, Chang A, Weber N, Hubler A. Hebbian learning in the agglomeration of conducting particles. Phys Rev E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics). 1999;59(3):3165–8.

Sperl, M., et al. “Hebbian learning in the agglomeration of conducting particles.” Phys. Rev. E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics), vol. 59, no. 3, APS, 1999, pp. 3165–68.

Sperl M, Chang A, Weber N, Hubler A. Hebbian learning in the agglomeration of conducting particles. Phys Rev E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics). APS; 1999;59(3):3165–3168.