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Stephen Kirkland
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Sukanta Pati
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Abraham Berman; Karl-Heinz Foerster
Algebraic connectivity of trees with a pendant edge of infinite weight,
Electron. J. Linear Algebra 13 (2005), 175-186.

Oscar Rojo; Luis Medina; Nair M.M. de Abreu; Claudia Justel
Extremal algebraic connectivities of certain caterpillar classes and symmetric caterpillars,
Electron. J. Linear Algebra 20 (2010), 136-157.

Wai Chee Shiu; Ji-Ming Guo; Jianxi Li
The minimum algebraic connectivity of caterpillar unicyclic graphs,
Electron. J. Linear Algebra 22 (2011), 838-848.

Hanyuan Deng and He Huang
On the main signless Laplacian eigenvalues of a graph.
Electron. J. Linear Algebra 26 (2013) pp. 381-393.