@proceedings {8692,
	title = {Design Considerations for a Helical Undulator for the Production of Polarised Positrons for TESLA},
	journal = {Presented at},
	number = {EPAC-2004-MOPKF064},
	year = {2004},
	author = {Appleton, SC and Scott, DJ and Clarke, JA and Baynham, E and Rochford, J and Ivanyushenkov, Y and Todd, B and Bradshaw, TW and Carr, SC}
}
