Pronominal and adnominal demonstratives (proximal and distal) are formally equivalent. As far as the distal demonstrative is concerned, the only possible difference between the adnominal and pronominal forms is that the former may be phonologically reduced from ikəl to kəl; this is however a reflection of the two forms' different prosodic prominence in the clause, and does not therefore suggest a lexical split.
Source: Cardoso 2009: 120
Source: Cardoso 2004-2008
Source: Cardoso 2004-2008