Knowledge and use of the internet as a source of controlled substances

Qualitative Data Analysis: A Sourcebook of New Methods

Linda S. Lotto · Educational Evaluation and Policy Analysis · 1986 · 8.7K citations

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Qualitative data analysis: A sourcebook of new methods

L. Dijkstra · European Journal of Operational Research · 1985 · 2.9K citations

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Just a Click Away: Recreational Drug Web Sites on the Internet

Paul M. Wax · PEDIATRICS · 2002 · 105 citations

Hallucinogens on the Internet: A Vast New Source of Underground Drug Information

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The Availability of Web Sites Offering to Sell Opioid Medications Without Prescriptions

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