@article{GDZPPN002404168, title = {Examples of Cohen-Macaulay Rings which are not Gorenstein.}, journal = {Mathematische Zeitschrift}, volume = {111}, year = {1969}, pages = {109-111}, zbl = {0184.29201}, url = {http://dml.mathdoc.fr/item/GDZPPN002404168} }
Eagon, John A. Examples of Cohen-Macaulay Rings which are not Gorenstein.. Mathematische Zeitschrift, Tome 111 (1969) pp. 109-111. http://gdmltest.u-ga.fr/item/GDZPPN002404168/