Herrera, Ana Maria; Murtazashvili, Irina; Pesavento, Elena - In: Economics Letters 99 (2008) 1, pp. 155-158
We re-examine changes in the cross-section correlation pattern of sales and inventories using Ng's [Ng, S., 2006, Testing cross-section correlation in panel data using spacings, Journal of Business and Economic Statistics, 24 (1), 12-23] "uniform spacing" method, which permits the estimation of...