@article {The2001,
title = {The Use of Follow-up Questions to No Responses in Dichotomous Choice Contingent Valuation Surveys},
year = {2001},
url = {https://www.esri.ie/publications/the-use-of-follow-up-questions-to-no-responses-in-dichotomous-choice-contingent-valuation-surveys},
author = {Curtis, J.},
journal = {Agricultural and Resource Economics Review, Vol. 30 No. 2},
}