ECE/TRANS/WP.29/GRSP/47, para. 4, ECE/TRANS/WP.29/GRSP/2009/28, (ECE/TRANS/WP.29/AC.3/18) (GRSP-47-20)
Documents: ECE/TRANS/WP.29/GRSP/47, par. 4, ECE/TRANS/WP.29/GRSP/2009/28, (ECE/TRANS/WP.29/AC.3/18) et (GRSP-47-20).