PoeTree stems from the following resources:

Corpus of Czech Verse data article
Metricalizer website article
Deutsches Lyrik Korpus data article
Project Gutenberg website
Corpus of Spanish Golden Age Sonnets data article
Diachronic Spanish Sonnet Corpus data article
Corpus Malherbə data article
ELTE Poetry Corpus data article
Biblioteca italiana website
Poemas data article
Corpus of Russian Poetry website
Corpus of Slovenian Poetry
Supported by the Czech Science Foundation (GA23-07727S)