@article {0022-3700-10-5-006,
	title = {Zero-energy Born exchange amplitude for electron-helium scattering},
	journal = {Journal of Physics B: Atomic and Molecular Physics},
	volume = {10},
	number = {5},
	year = {1977},
	note = {<p>n/a</p>
},
	pages = {L149},
	abstract = {<p>The zero-energy Born exchange amplitude for electron-helium scattering in the forward direction has been calculated using a multi-parameter Hylleraas-type wavefunction. Up to 125 terms are used and the result is extrapolated to be 3.9430+or-0.0016. The present calculation substantiates the conclusion reached in several recent papers that the zero-energy form of the Gerjuoy-Krall dispersion relation (1960, 1962) does not hold for e - -He scattering.</p>
},
	url = {http://stacks.iop.org/0022-3700/10/i=5/a=006},
	attachments = {https://labs.iams.sinica.edu.tw/project/sites/default/files/ykho/files/1977_3.pdf},
	author = {Ho, YK}
}
