Its origin is attributed to both 19th-century literary works and as a result of folk etymology.

If this is the case, its origin may well be attributed to subterranean fires.

Today, the band's origins are attributed to Colorado, where both Denver and the majority of members hailed from.

The origins of this era have been attributed to:

The origin of the song's title has been attributed variously over the years.

The monument bears several engraved statements whose origins are not attributed.

Its origin is attributed to the excitation of plasmons in the metal surface.

The origin of the name North River is generally attributed to the Dutch.

Supposition abounds not least because the custom has been shown to be much older than the legend to which its origin is attributed.

The origin of this use is attributed to Paulo Campos.