@article{10_4153_CMB_1993_030_6,
     author = {Mekler, Alan H. and Shelah, Saharon},
     title = {The {Canary} {Tree}},
     journal = {Canadian mathematical bulletin},
     pages = {209--215},
     year = {1993},
     volume = {36},
     number = {2},
     doi = {10.4153/CMB-1993-030-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1993-030-6/}
}