An interesting paper on techniques to obtain answers to questions on sensitive topics, like illegal extractive activities or sensitive (taboo) issues.
http://www.sciencedirect.com/science/article/pii/S0006320714003644
An interesting paper on techniques to obtain answers to questions on sensitive topics, like illegal extractive activities or sensitive (taboo) issues.
http://www.sciencedirect.com/science/article/pii/S0006320714003644