Possible approaches to improving the international comparability of immigration and emigration statistics:  an illustration of the Canadian situation
"This article seeks to highlight the extent of the lack of standardization which exists in the field of international migration statistics and, using statistics for Canada as an example, to illustrate how significant progress towards resolving this problem could be made if sufficient numbers of countries made their immigration and emigration statistics gradually comply more fully with the United Nations recommendations."
Kelly
J J
JJ
D000569:Americas; D002170:Canada; D003625:Data Collection; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D009656:North America; D011153:Population; D011157:Population Dynamics; D012015:Reference Standards; D012106:Research