HERA Status and Perspectives of Future Lepton-Hadron Colliders		20
	F. Willeke, DESY, Hamburg
	PAPER
	Beam Based Alignment of Combined Function Magnets in the Upgraded HERA Interaction Regions		365
	M. Seidel, F. Brinker, W. Decking, G.H. Hoffstaetter, J. Keil, T. Limberg, M. Minty, R. Wanzenberg, F. Willeke, DESY, Hamburg
	PAPER
	Measurement of HERA's Central RF Frequency		398
	G.H. Hoffstaetter, B. Holzer, F. Willeke, DESY, Hamburg; A. Meseck, HMI, Berlin
	PAPER
	Beam-Beam Limit with Hourglass Effect in HERA		401
	G.H. Hoffstaetter, F. Willeke, DESY, Hamburg
	PAPER
	Destabilising Effect of Linear Coupling in the HERA Proton Ring		1535
	E. Métral, CERN, Geneva; G.H. Hoffstaetter, F. Willeke, DESY, Hamburg
	PAPER