Haiku in languages other than Japanese Italiana Amici dell'Haiku) was established, and then the Italian Haiku Association. The poet Mario Chini (1876 - 1959) published the book of haiku titled "Moments" (Rome, 1960). Later, Edoardo Sanguineti published some of his haiku. Traditional haiku have been developed in Estonia since 1960s. Andres Ehin (1940 - 2011) was the most prominent Estonian-language haiku writer of the 20th century; his bilingual English-Estonian collection "Moose Beetle Swallow" was published in Ireland in 2005. Estonian poets Arvo Mets and Felix Tammi wrote haiku in Russian. What some people call Estonian haiku () is a form of poetry introduced in Estonia in
Invariant of a binary form for the ring of covariants. showed that the ring of invariants of a degree 8 form is generated by 9 invariants of degrees 2, 3, 4, 5, 6, 7, 8, 9, 10, and the ring of covariants is generated by 69 covariants. August von Gall () and confirmed the generators for the ring of invariants and showed that the ideal of relations between them is generated by elements of degrees 16, 17, 18, 19, 20. showed that the algebra of invariants of a degree 9 form is generated by 92 invariants. Cröni, Hagedorn, and Brouwer computed 476 covariants, and Lercier