Authors: Harborth, H Koch, M Szabo, L

Citation: H. Harborth et al., Newton numbers for overlapping circular discs, ST SCI M H, 37(1-2), 2001, pp. 119-130

Authors: Harborth, H Moller, M

Citation: H. Harborth et M. Moller, Weakened Ramsey numbers, DISCR APP M, 95(1-3), 1999, pp. 279-284