@article{CM_1987__63_3_391_0,
     author = {Todorcevic, S. and Velickovic, B.},
     title = {Martin's axiom and partitions},
     journal = {Compositio Mathematica},
     pages = {391--408},
     publisher = {Martinus Nijhoff Publishers},
     volume = {63},
     number = {3},
     year = {1987},
     mrnumber = {909386},
     zbl = {0643.03033},
     language = {en},
     url = {http://www.numdam.org/item/CM_1987__63_3_391_0/}
}