| Fritts, Paul, Mech | S.H., W.J., L.D. | Evaluation of methods for alleviating wolf depredations on livestock. | 1979 | U.S. Fish and Wildlife Service report, 21 pp. |
From USDI 1988:
"Suggests that restricted lethal trapping, coupled with alternate methods of minimizing wolf visits to pastures, may constitute the proper formula for alleviating as much as possible the wolf-caused damage to livestock in Minnesota with the least public controversy."