Strong and fragile liquids in percolation approach to the glass transition V. N. Novikov, E. Rössler, V. K. Malinovsky and N. V. Surovtsev Europhys. Lett., 35 4 (1996) 289-294 Published online: 01 September 2002 DOI: 10.1209/epl/i1996-00568-7