Paul A. Peterson,Liability for Ground Damage from Crashes or Forced Landings of Aircraft, 43 Cal. L. Rev. 309 (1955). Available at: http://scholarship.law.berkeley.edu/californialawreview/vol43/iss2/6
Where a person is struck by a flying object the legal standard may be different. William L. Prosser, Torts § 78, at 514 n. 69 (4th ed. 1971) (collecting cases).
Should a distinction be drawn between a forced but intentional landing and a drone entirely out of control? William L. Prosser, Torts § 13, at 65 n. 20 (4th ed. 1971) (collecting cases)