Frontal assault versus incremental change: A comparison of collective bargaining in Portugal and the Netherlands
  	  Pedro Silva Martins,
  	  Alexander Hijzen,
  	  Jante Parlevliet
	IZA Journal of Labor Policy, 
vol. 9, 2019, p. 1-26.
The Number of Active Bidders in Internet Auctions
  	  Laurens de Haan,
  	  Casper G. De Vries,
  	  Chen Zhou
	Journal of Economic Theory, 
vol. 148, 2013, p. 1726-1736.