Company profitability and labour intensity under different phases of the economic cycle : a Pan-European empirical studyRuubel, Raul; Hazak, Aaro2011 2nd International Conference on Economics, Business and Management : IPEDR. Vol.222011 / p. 178-182

Contribution of R&D services to added economic value in EstoniaHazak, Aaro; Ruubel, RaulProceedings of the 11th International Academic Conference : Reykjavik, Iceland, 24-27 June 20142014 / p. 129

Disparities in knowledge employees’ actual, contractual, and desired working schedules : [Online resource]Ruubel, Raul; Hazak, AaroKnowledge management : an international journal2018 / p. 17-28 : ill https://doi.org/10.18848/2327-7998/CGP/v18i01/17-30 Journal metrics at Scopus Article at Scopus

Endowment, commitment and convergence : a roadmap towards productivity growth [Electronic resource]Männasoo, Kadri; Hein, Heili; Ruubel, Raul7th International conference "Economic challenges in enlarged Europe" : 14-16 June 2015, Tallinn, Estonia : [conference proceedings]2015 / [CD-ROM] http://www.ester.ee/record=b3088567*est

Is there a relationship between company profitability and salary level? A Pan-European empirical studyRuubel, Raul; Hazak, Aaro2011 International Conference on Innovation, Management and Service : IPEDR. Vol.142011 / p. 332-337 : ill

Regional productivity convergence in advanced and emerging European economiesMännasoo, Kadri; Hein, Heili; Ruubel, RaulEuropean policy analysis2016 / p. 1-12 : ill http://www.sieps.se/sites/default/files/2016_12epa%20eng%20A4%20korr4_0.pdf

Time dimensions of job autonomy in Estonian R&D institutionsRuubel, RaulJournal of the knowledge economy2021 / 21 p. : ill https://doi.org/10.1007/s13132-020-00633-5 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Tootlikkuse kasvutegurid Euroopa regioonidesMännasoo, Kadri; Hein, Heili; Ruubel, RaulRiigikogu toimetised2017 / lk. 89-98 : ill http://www.ester.ee/record=b1361123*est

When would creative R&D employees like to work?Hazak, Aaro; Ruubel, Raul; Virkebau, MarkoInternational Journal of Organizational Analysis2019 / p. 596 - 612 https://doi.org/10.1108/IJOA-04-2018-1409 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Working schedules and efficient time-use in R&D work = Tööajakorraldus ning efektiivne ajakasutus teadus- ja arendustegevusesRuubel, Raul2020 https://www.ester.ee/record=b5381361*est https://digikogu.taltech.ee/et/Item/089a630b-ec62-4347-bb8d-9b18b403e0e3 Paindlik tööaeg aitab kergitada ettevõtte kasumit ja väärtustada töötajat (novaator.err.ee, 15.12.2020)