2 joint papers of Boban Velickovic with Shelah

ShVaVe:1034 [abstract]
Shelah+Vaananen+Velickovic, Positional Strategies in long Ehrenfeucht-Fra{\"{i}}ss\'e games -- J Symbolic Logic 80 (2015) 285-300
LVSh:483 1996-03-10 [pdf] [ps] [abstract] [arXiv:math.LO/9301209]
Louveau+Velickovic+Shelah, Borel partitions of infinite subtrees of a perfect tree -- Annals Pure and Applied Logic 63 (1993) 271-281