Blåka, Sara; Jacobsen, Dag Ingvar (2024). Is buying cheaper than sharing? A study of the effect stand-alone contracting out versus public co-production has on cost in Norwegian local auditing services. Local Government Studies. ISSN: 0300-3930. doi:10.1080/03003930.2024.2393101.
Blåka, Sara; Jacobsen, Dag Ingvar (2023). Does shared service delivery affect cost? A study of the cost-capacity relation in Norwegian local child protection services. Journal of Economic Policy Reform. ISSN: 1748-7870. doi:10.1080/17487870.2023.2281645.
Bel, Germà; Bischoff, Ivo; Blåka, Sara; Casula, Mattia; Lysek, Jakub; Swianiewicz, Pawel; Tavares, António F.; Voorn, Bart (2022). Styles of inter-municipal cooperation and the multiple principal problem: a comparative analysis of European economic area countries. Local Government Studies. ISSN: 0300-3930. doi:10.1080/03003930.2022.2041416.
Blåka, Sara; Jacobsen, Dag Ingvar; Morken, Tone (2021). Service quality and the optimum number of members in intermunicipal cooperation: The case of emergency primary care services in Norway. Public Administration. ISSN: 0033-3298. doi:10.1111/padm.12785.
Blåka, Sara (2017). Does cooperation affect service delivery costs? Evidence from fire services in Norway. Public Administration. ISSN: 0033-3298. 95 (4). s 1092 - 1106. doi:10.1111/padm.12356.
Blåka, Sara (2017). Service Quality, Inter-municipal Cooperation and the Optimum Scale of Operation: The case of local fire departments in Norway.. The Rise of Common Political Order. ISBN: 978-1-78643-499-9. Edward Elgar Publishing. 11. s 233 - 251.