1. Free vibrations of thin rectangular plates having narrow cracks with simply supported edges;Lynn,1967
2. Vibration and stability of cracked rectangular plates;Stahl;Int. J. Solids Structures,1972
3. Free vibration of a simply supported rectangular plate with a straight through-notch;Nezu;Bull. Jpn Soc. Mech. Engrs,1963
4. Vibration of cracked rectangular plates;Hirano;Bull. Jpn Soc. Mech. Engrs,1980