RT Journal Article SR 00 A1 Silverberg, G. A1 Verspagen, B. T1 An evolutionary model of long term cyclical variations of catching up and falling behind JF Journal of Evolutionary Economics YR 1995 FD 1995 VO 5 IS 3 SP 209 OP 227 PB Springer SN 1432-1386 LK https://pure.iiasa.ac.at/id/eprint/4242/