"eBook ISBN","Title","Subtitle","Authors/editors","Copyright year","Edition","DOI","Price (EUR)","Additional info"
"978-3-7643-8749-5","An Introduction to the Theory of Functional Equations and Inequalities","Cauchy's Equation and Jensen's Inequality","Marek Kuczma; Attila Gilányi",2009,"2","https://doi.org/10.1007/978-3-7643-8749-5",419,""