Bibl. 12 nim. Lisas publikatsioonid: Külaots, I., Yrjas, K.P., Hupa M., Ots, A. Sulphation of oil shale ash under atmospheric and pressurised combustion conditions. Yrjas, K.P., Külaots, I., Hupa, M., Ots, A. Sulphur capture by oil shale ashes under atmospheric and pressurized FBC conditions. Magistritöö (tehnika magister) - TTÜ. Käsikiri, TTÜ raamatukogus
Külaots, Indrek, 1968-