Multilingual articles (indefinite)

From UniLang Wiki

Here you can see an overview to indefinite articles in many different languages. Feel free to add more.

Indefinite plural articles only seem to exist in some Romance languages. Compare French un livre / des livres to English a book / books.

Albanian

The is no indefinite article in the plural. The only indefinite article is një.

Arabic

There is no indefinite article, in formal pronunciation and full vocalized writings indefinite is shown by tanwin, if not in a "constuct state".

In writing (normal of full vocalized) the tanwin of accusative indefinite is shown by a final alif, which is not pronounced. (The alif is not used if the word ends in ta marbuta or alif with a hamza). So:
he opened the door: �?تح الباب
he opened a door: �?تح بابا

Bashkir

There are no indefinite articles whatsoever.

Breton

ul before a word begining by l.
un before a word begining by t, d, n, a vowel or a mute h.
ur before a word begining by other consonants.

Catalan

feminine singular: una
feminine plural: unes
masculine singular: un
masculine plural: unes

Dalecarlian

There is no indefinite article in the plural, and there is no genitive.

masculine: nom. ein, acc. ein, dat. einum,
feminine: nom. eiñ, acc. eina, dat. einnir,
neuter: nom. eit, acc. eit, dat. einu.

Dutch

There is no indefinite article in the plural. The only indefinite article in Dutch is een.

English

There is no indefinite article in the plural.

before a consonant (excluding "h"): a
before vowels and the letter "h": an

Note that the sound when spoken, rather than the printed letter, governs the usage of "a"/"an". You would say "a federal agent" as expected, but "an FBI agent" because the F in "FBI" is spoken "ef".

Esperanto

There is no indefinite article in Esperanto

Faroese

There is no indefinite article in plural.

feminine singular: nom. ein, gen. einar, dat. ein(ar)i, acc. eina
feminine plural: nom. einar, gen. eina, dat. einum, acc. einar
masculine singular: nom. ein, gen. eins, dat. einum, acc. ein
masculine plural: nom. einir, gen. eina, dat. einum, acc. einar
neuter singular: nom. eitt, gen. eins, dat. einum, acc. eitt
neuter plural: nom. eini, gen. eina, dat. einum, acc. eini

French

feminine singular: une
masculine singular: un
plural: des

Galician

feminine singular: unha
masculine singular: un
feminine plural: unhas
masculine plural: uns

German

There is no indefinite article in the plural.

feminine: nom. eine, gen. einer, dat. einer, acc. eine
masculine: nom. ein, gen. eines, dat. einem, acc. einen
neuter: nom. ein, gen. eines, dat. einem, acc. ein

Greek

There is no indefinite article in the plural.

feminine: nom. μια, gen. μιας, acc. μια
masculine: nom. ένας, gen. ενός, acc. ένα(ν)
neuter: nom. ένα, gen. ενός, acc. ένα

The �? in brackets (accusative masculine) is dropped if the following word starts with Β, Γ, Δ, Ζ, Θ, Λ, Μ, �?, Ρ, Φ or Χ.

feminine: una, before a vowel un'
masculine:

        un before consonants (but the followings) and vowels 
        uno before z, x, ps, gn, or s impura (s followed by another consonant).
 Be aware: un'amica, un'artista (feminine)
           un amico, un aritista (masculine)

feminine: nominative/accusative eng, dative enger
masculine/neuter: nominative/accusative e(n), dative engem

The consonant in brackets is dropped if the following letter is not D, H, N, T, Z, a vowel or a punctuation mark.

I'm afraid I'm not 100% sure about those articles...