. >> safe deposit boxes believed to contain manuscripts by franz kafka were opened today in zurich. it's the latest twist in a legal battle over who opens these valuable documents. >> franz kafka is considered one of the most important and influential writers of the 20th century. born to middle class jewish parents in prague his work includes elements of magic realism, modernism and exist enginesism. but it's sat irization of bureaucracy which features prom ineptly in some of his best known titles including "the cassel" and "the trial." >> who could they 2450es men be? what were they talking about? what authority would they represent? >> israel is laying claim to the missing papers on the grounds that since he was jewish, it's part of its state cultural heritage. but two israeli sisters hope to sell the manuscripts which they claim was were inherited from their mother, secretary to kafka's editor and close friend. whatever the outcome the unknown manuscripts will surely bring new light to a writer whose work continues to be a source of confusion and philosophical discussion in both