Unified Approach to Hamiltonian Systems, Poisson Systems, Gradient Systems, and Systems with Lyapunov Functions or First Integrals
Robert I. McLachlan, G. R. W. Quispel, and Nicolas Robidoux
Phys. Rev. Lett. 81, 2399 (1998) - Published 21 September, 1998
Accurate Measurement of the Planck Constant
Edwin R. Williams, Richard L. Steiner, David B. Newell, and Paul T. Olsen
Phys. Rev. Lett. 81, 2404 (1998) - Published 21 September, 1998