"Tsigas" . "P." . . . . "e-mail adres: tsigas@cwi.nl"@nl . _:Be94495f5c1893634dc07fef7f1770456 . . "Tsigas, Philippas" . "P. Tsigas" . "Tsigas, P." . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 "2023-05-20"^^ . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 "122442261" . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 . _:Be94495f5c1893634dc07fef7f1770456 .