@Book{            sonata-bis-2018-jez,
  Author        = "Je{\.z}, Artur",
  date-added    = "2023-08-09 10:22:40 +0200",
  date-modified = "2023-08-09 10:23:02 +0200",
  Title         = "Sonata bis proposal",
  Year          = "2018",
  File          = "SONATA\_BIS\_2018 - abstract.pdf",
  file-2        = "SONATA\_BIS\_2018 - description.pdf"
}

@Book{ sonata-bis-2018-jez, Author = "Je{.z}, Artur", date-added = "2023-08-09 10:22:40 +0200", date-modified = "2023-08-09 10:23:02 +0200", Title = "Sonata bis proposal", Year = "2018", File = "SONATA_BIS_2018 - abstract.pdf", file-2 = "SONATA_BIS_2018 - description.pdf" }