@misc{1198981, author = {E R Jr Fuller and E P Butler and R F Jr Krause and M D Vaudin}, title = {Toughening mechanisms in ceramic composites- semi-annual progress report for the period ending March 31, 1989:}, year = {1989}, month = {1989-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.89-4111}, language = {en}, }