Загадка гусиного клина

Florian Muijres and Michael Dickinson, Bird flight: Fly with a little flap from your friends, Nature 505 (16 January 2014) 295–296.

Steven J. Portugal and others, Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight, Nature 505 (16 January 2014) 399–402.