Analysis of information sources in references of the Wikipedia article "Lift-induced drag" in English language version.
{{cite book}}
: |journal=
ignored (help){{cite book}}
: |journal=
ignored (help)Winglets, which are small, nearly vertical, winglike surfaces mounted at the tips of a wing, are intended to provide, for lifting conditions and subsonic Mach numbers, reductions in drag coefficient greater than those achieved by a simple wing-tip extension with the same structural weight penalty.
{{cite tech report}}
: CS1 maint: date and year (link){{cite book}}
: |journal=
ignored (help){{cite book}}
: |journal=
ignored (help)