Volume 73, No. 4 (1998)
Commentarii Mathematici Helvetici

pp. 499–515 -injective surfaces in graph manifoldsJ. Hyam RubinsteinShicheng Wang
pp. 516–547 Minimal orbits close to periodic frequenciesU. BessiV. Semijopuva
pp. 548–565 S.A.G.B.I. bases for rings of formal modular seminvariantsR. J. Shank
pp. 566–583 Fano contact manifolds and nilpotent orbitsTing-Yu Lee
pp. 584–602 Stable constant mean curvature hypersurfaces in some Riemannian manifoldsS. Montiel
pp. 603–636 Schubert polynomials and Bott-Samelson varietiesPeter Magyar
pp. 637–676 Cogroups in algebras over an operad are free algebrasBenoit Fresse