Theory and applications of relational structures as knowledge instruments II : international workshops of COST Action 274, TARSKI, 2002-2005: selected revised papers / ed. H. Swart, 2006 r=on-line. - Текст : электронный.
Swart H. Expression and interpretation of negation : OT typology / H. Swart, 2010 r=on-line. - Текст : электронный.