Documentation: ECE/TRANS/55; (http://border.unece.org - Legal Instruments); TRANS/WP.30/196; TRANS/WP.30/AC.3/10; TRANS/WP.30/AC.3/8; TRANS/WP.30/2002/19; TRANS/WP.30/2001/16; TRANS/WP.30/2000/16; TRANS/WP.30/2000/; Informal documents No. 19 and 21 (2002).
Documents : ECE/TRANS/55; (http://border.unece.org − Legal Instruments); TRANS/WP.30/196; TRANS/WP.30/AC.3/10; TRANS/WP.30/AC.3/8; TRANS/WP.30/2002/19; TRANS/WP.30/2001/16; TRANS/WP.30/2000/16; TRANS/WP.30/2000/11, documents informels nos 19 et 21 (2002).