J H Smid, A N Swart, A H Havelaar, A Pielaat
A practical framework for the construction of a biotracing model: application to Salmonella in the pork slaughter chain
Risk analysis : an official publication of the Society for Risk Analysis
journal article parental background secondary school track choice wages get access christian dustmann christian dustmann department economics university college london london wc1e 6bt email cdustmannuclacuk search works author oxford academic google scholar oxford economic papers volume 56 issue 2 april 2004 pages 209230 httpsdoiorg101093oepgpf048 published 01 april 2004