<prompt> Gadzira shanduro yakaoma zvikuru yemutsara uyu Luca Cardelli naPeter Wegner vakawedzera pfungwa yacho mubhuku ra1985.  <response>: Chokwadika, shanduro yakaoma zvikuru yemutsara wacho ndeiyi Luca Cardelli naPeter Wegner vakawedzera pfungwa yacho mubhuku ra1985 kupfurikidza nokuunza pfungwa ye kubatanidza polymorphism kuenzanisa subtypes uye nhaka. 