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2. Topological analysis of linear mechanical vibrating systems by the method of structural numbers (in Polish);Arczewski;Archiwum Budowy Maszyn,1972
3. Topological analysis of a class of lumped vibrational systems;Chen;Journal of Sound and Vibration,1969
4. A Treatise on the Theory of Determinants;Muir,1960
5. The Theory of Graphs and Its Applications;Berge,1962