5. The method of HALPHE N and its modifications by ABND T and INNE S
Eric Doolittle · 1912
5. The method of HALPHE N and its modifications by ABND T and INNE S was published in The Secular Variations of the Elements of the Orbits of the Four Inner Planets Computed for the Epoch 1850.0 G. M. T. on page 49.