1986 “Old Javanese inscriptions and linguistic research.” In: H.I.R. Hinzler (ed.), Studies in South and Southeast Asian archaeology: essays offered to dr. J. G. de Casparis on the occasion of his retirement presented by colleagues and former students at the archaeological conference held on 2 June 1986 in Leiden, Leiden: H.I.R. Hinzler (Studies in South and Southeast Asian archaeology [1]), pp. 5-12.
1996 De tekstuele structuur van de Oud-Javaanse vorstelijke inscripties uit de periode Singhasari-Majapahit, 1255-1486, [s.l.: s.n.], 2 dl. – PhD thesis Leiden University.
2001 “Curses in the royal inscriptions from the Singhasari-Majapahit period, AD 1222-1486.” BTLV 157,1: 97-112.