COMMISSION REGULATION (EC) No 490/95 of 1 March 1995 amending Regulations (EC) No 953/94, (EC) No 1077/94, (EC) No 1078/94, (EC) No 1080/94, (EC) No 2162/94, (EC) No 2458/94, (EC) No 2477/94 and (EC) No 2668/94 opening standing invitations to tender for the export of cereals held by certain intervention agencies