Drake equation
[an] Ecuación de Drake
[ar] معادلة دريك
[az] Dreyk tənliyi
[be] Ураўненне Дрэйка
[bg] Уравнение на Дрейк
[bn] ড্রেকের সূত্র
[bs] Drakeova jednačina
[ca] Equació de Drake
[cs] Drakeova rovnice
[da] Drakes ligning