SELECT copa_libertadores_1996 FROM table_name_10 WHERE supercopa_1995 = "round 1" AND team = "argentinos juniors"
which Copa Libertadores 1996 has round 1 Supercopa 1995 and argentinos juniors team ?
CREATE TABLE table_name_10 (
    copa_libertadores_1996 VARCHAR,
    supercopa_1995 VARCHAR,
    team VARCHAR
)