n Szakacs 외., C.A. q Rokicki 외., Monatsh. Chem. , 니나가와 외, Chem. Express , 그리고 Brindoepke와 Marten, C.A.

n Szakacs et al., C.A. q Rokicki et al., Monatsh. Chem. , Ninagawa et al., Chem. Express , and by Brindoepke and Marten, C.A.