@article {Nunn18, author = {Kenneth P. Nunn, Jr. and Gerald P. Madden and Michael J. Gombola}, title = {Are some insiders more {\textquotedblleft}inside{\textquotedblright} than others?}, volume = {9}, number = {3}, pages = {18--22}, year = {1983}, doi = {10.3905/jpm.9.3.18}, publisher = {Institutional Investor Journals Umbrella}, issn = {0095-4918}, URL = {https://jpm.pm-research.com/content/9/3/18}, eprint = {https://jpm.pm-research.com/content/9/3/18.full.pdf}, journal = {The Journal of Portfolio Management} }