@article{ELA_2007__16__a13,
     author = {Day, Jane and So, Wasin},
     title = {Singular value inequality and graph energy change},
     journal = {The electronic journal of linear algebra},
     pages = {291--299},
     publisher = {mathdoc},
     volume = {16},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2007__16__a13/}
}