Communications (Mitteilungen), irregular publication.

Both are irregular publications.

Press censorship and seizures by the government led to irregular publication.

The literary magazine began as a quarterly and then evolved into a more irregular publication.

It is dedicated to salticid research; its irregular publication is titled Peckhamia.

Its irregular publication, Socialist Voice, was published frequently until 2002.

Today it is an irregular publication dedicated to the editing of Tolkien's manuscripts describing his Elvish Languages.

Annuals and other irregular publications sometimes publish no items in a particular year, affecting the count.

Party Affairs was an irregular internal publication targeted to party members.