nitric acid, gadolinium(3+) salt ; nitric acid, gadolinium(3+) salt (3:1) ; gadolinium(3+) trinitronate ; gadolinium(3+) ion trinitronate ; gadolinium nitrate ; gadolinium trinitrate ; nitric acid, gadolinium(3+) salt ; gadolinium(iii) nitrate (1:3) ; nitric acid, gadolinium(3+) salt (3:1) ;