@article{AMI_2006_33_a12,
     author = {L\'aszl\'o Zsak\'o},
     title = {Variations for spanning trees},
     journal = {Annales mathematicae et informaticae},
     pages = {151--165},
     publisher = {mathdoc},
     volume = {33},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2006_33_a12/}
}