#### Volume 11, issue 1 (2007)

 1 G Burde, H Zieschang, Knots, de Gruyter Studies in Mathematics 5, Walter de Gruyter & Co. (1985) MR808776 2 A J Casson, C M Gordon, Cobordism of classical knots, from: "À la recherche de la topologie perdue", Progr. Math. 62, Birkhäuser (1986) 181 MR900252 3 A J Casson, J L Harer, Some homology lens spaces which bound rational homology balls, Pacific J. Math. 96 (1981) 23 MR634760 4 S K Donaldson, The orientation of Yang–Mills moduli spaces and 4–manifold topology, J. Differential Geom. 26 (1987) 397 MR910015 5 R Fintushel, R Stern, Rational homology cobordisms of spherical space forms, Topology 26 (1987) 385 MR899056 6 P Orlik, P Wagreich, Algebraic surfaces with $k^*$–action, Acta Math. 138 (1977) 43 MR0460342 7 B Owens, S Strle, Rational homology spheres and the four-ball genus of knots, Adv. Math. 200 (2006) 196 MR2199633 8 P Ozsváth, Z Szabó, Absolutely graded Floer homologies and intersection forms for four-manifolds with boundary, Adv. Math. 173 (2003) 179 MR1957829 9 P Popescu-Pampu, The geometry of continued fractions and the topology of surface singularities (2005) arXiv:math.GT/0506432 10 O Riemenschneider, Deformationen von Quotientensingularitäten (nach zyklischen Gruppen), Math. Ann. 209 (1974) 211 MR0367276 11 L Siebenman, Exercises sur les noeuds rationnels (1975)