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Relating question type to panel conditioning: comparing trained and fresh respondents [journal article]
Source: Survey Research Methods, 3 (2009) 2. p.73-80
Differential response rates in postal and web-based surveys in older respondents [journal article]
Source: Survey Research Methods, 3 (2009) 1. p.1-6
Response order, party choice, and evaluations of the national economy: a survey experiment [journal article]
Source: Survey Research Methods, 3 (2009) 1. p.7-12
The mobile-only population in Portugal and its impact in a dual frame telephone survey [journal article]
Source: Survey Research Methods, 3 (2009) 2. p.105-111