Siil I. "Zur Anpassung russischer Lehnwörter im Kukkuzi-Dialekt des Wotischen". Soviet Finno-Ugric Studies, XXI, 3, 1985
Ott A., Siil I. "Real time speech synthesis – development and employment". Computers and Artificial Intelligence, 1987, Vol.6, No 2
Siil I., Ott A.. "Temporal modelling of Estonian for speech synthesis". Papers from the 15th meeting of Finnish phoneticians. Helsinki University of Technology, Espoo 1988, Publication 31
Siil I., "Estonian prosody model for speech synthesis". Proc. of XIIth International Congress of Phonetic Sciences, Aix-en-Provence 1991, Vol.3,
Siil, I. "Public Management Profile. Estonia". Public Management Profiles. Support for Improvement in Governance and Management in Central and Eastern European Countries. OECD, Paris 1995
Siil I. "Toward Official Electronic Documents". Baltic IT Review, 1, Riga 1998
Siil I. "Estonia: Preparing for the Information Age". ICA Information – International Journal on Information Technology in Government. Issue No 74. London, 2001,
Siil I. (koostaja). "Information Economy Report: Estonia". E-Policy Development in Transition Economies 2002–2003. Economic Commission for Europe. United Nations, Geneva 2002
Siil I. "Encouraging Citizen Participation". Public Service Review: Accession States 2003. PSCA International. Newcastle-under-Lyme, Staffordshire, 2003