VEBA-IPDI Unmatched for VersatilityChemical & Engineering NewsChemical & Engineering News1977DOI 10.1021/cen-v055n038.p018
VEBA-IPDI Unmatched for VersatilityAmerican Chemical SocietyAmerican Chemical Society1976DOI 10.1021/cen-v054n051.p016