Damages and their causes of an old concrete construction of the hydroplane hangars in TallinnOnton, Heiki; Õiger, KarlProceedings of European Symposium on Service Life and Serviceability of Concrete Structures : ESCS-2006 : Espoo, Finland, June 12-14, 20062006 / p. 312-318 Deterioration and restoration of old reinforced concrete constructions : reinforced concrete constructionsOnton, Heiki; Õiger, Karl2010 https://www.ester.ee/record=b2688357*est Estimation of residual carrying capasity and restoration of the historic reinforced concrete shells and frames erected in EstoniaOnton, HeikiStructural studies, repairs and maintenance of heritage architecture X : Tenth International Conference on Structural Studies, Repairs and Maintenance of Heritage Architecture STREMAH X, Prague, Czech2007 / p. 407-417 Investigation of the causes of deterioration of old reinforced concrete constructions and possibilities of their restoration = Vanade raudbetoonkonstruktsioonide kahjustuste põhjuste uurimine ning nende restaureerimise võimalusedOnton, Heiki2008 https://www.ester.ee/record=b2449554*est Restoration of an old concrete construction of the Hydroplane Hangars in TallinnOnton, Heiki; Õiger, KarlTICCIH Intermediate Conference 2005 & International Forum for Industrial Tourism in Nagoya, Aichi : abstracts2005 / p. 59 Restoration of an old concrete construction: The Hydroplane Hangar in TallinnÕiger, Karl; Onton, HeikiMaterial of 6th European Commission Conference on Sustaining Europe's Cultural Heritage : from Research to Policy : 1-3 September 2004, London : final programme and abstracts2004 / p. 26 Vesilennukiangaaride saatusÕiger, Karl; Onton, HeikiEhitaja2003 / 5, lk. 54-58 ; 6, lk. 56-58