crispi's best-known work is "memorie sulla lingua albanese", first published in 1831 in palermo. partially influenced by conrad malte-brun's studies, it constitutes the first monograph on the albanian language. crispi considered albanian closely related to pelasgian, phrygian, macedonian and "proto-aeolian", thus an "ancestor" of greek, which according to him had lost its "ancient features" over the millennia. the monograph influenced other arbëreshë authors like giuseppe schiro, who first possibly used it as a point of reference in his 1834 paper "rapporti tra l'epiro e il regno delle due sicilie". his other publications include works on the arbëreshë communities of sicily and various textbooks.