Romain Boulet, Bertrand Jouve. The Lollipop Graph is Determined by its Spectrum. Electr. J. Comb., 15(1), 2008. [doi]
@article{BouletJ08, title = {The Lollipop Graph is Determined by its Spectrum}, author = {Romain Boulet and Bertrand Jouve}, year = {2008}, url = {http://www.combinatorics.org/Volume_15/Abstracts/v15i1r74.html}, researchr = {https://researchr.org/publication/BouletJ08}, cites = {0}, citedby = {0}, journal = {Electr. J. Comb.}, volume = {15}, number = {1}, }