both titles seem to be rather difficult. There is only 1 entry for Dia
do Desespero and none for Acto de Primavera in WorldCat.
We have bought O Dia do Desespero (1992) some years ago directly from
Atalanta Filmes in Portugal (VHS/PAL in portuguese without any subtitles
as is the entry in WorldCat). Atalanta Filmes still hold the rights for
this title but the video is no longer available on their website. You
might contact them if they can furnish this film on video.
Concerning Acto de Primavera I didn't find any evidence for a
publication on video ever. But there seems to be a 35mm copy in the US.
According to this weblog there was a performance of this title in the
MOMA cinema (New York) in June this year. You might contact them and ask
where they got the copy from.
With kind regards
Zentral- und Landesbibliothek Berlin
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