Schwerhoff, Gregor Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://link.springer.com/article/10.1007%2Fs11079-013-9283-7 (Any fulltext)
Schwerhoff, G., & Sy, M. (2014). The non-monetary side of the global disinflation. Open Economies Review (online first), 25(2), 337-371.