MilitaryHistoria - At first glance a flechette may look no different from an ordinary dart, however, upon analysis, it reveals that it is highly aerodynamic and far more deadly design. These flechettes
WWI Aerial Flechette (24th) "looks good" legit? - General Ammunition Discussion - International Ammunition Association Web Forum
Test Pilot - AOPA
How common were the use of flechettes from WW1 aircraft? - Quora
WW1 Aerial Flechette Identification - General Ammunition Discussion - International Ammunition Association Web Forum
Fléchette d'aviation | Aiolfi G.b.r.
German Flechette (aerial dart) | Australian War Memorial
Warnepieces: A Hard Rain's A-Gonna Fall - Fléchette Use in World War One
Les archers du ciel - Histoire des fléchettes d'avion
Fléchette d'aviation | Aiolfi G.b.r.
Flechette - Wikipedia
Fléchette d'aviation, emprunts de guerre, associations patriotiques...