Fiat Boundaries
"Fiat Objects" (original conference paper, 1994)"On Drawing Lines on a Map" (COSIT presentation, 1995)
Barry Smith and Achille Varzi, "Fiat and Bona Fide Boundaries" (PPR, 2000)
"Fiat Objects" (expanded version, Topoi 20: 2, 2001, 131–148)