Free vibration analysis of a functionally graded material beam : evaluation of the Haar wavelet methodKirs, Maarjus; Karjust, Kristo; Aziz, Imran; Õunapuu, Erko; Tungel, ErnstProceedings of the Estonian Academy of Sciences2018 / p. 1-9 : ill https://doi.org/10.3176/proc.2017.4.01 http://www.ester.ee/record=b2355998*est Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS