@misc{indiciae782001663452, title = {Multidirectional stability of the Graf system.}, author = {P J Strauss and J E Novotny and D G Wilder and L J Grobler and M H Pope}, year = {1994}, doi = {10.1097/00007632-199404150-00016}, url = {https://pubmed.ncbi.nlm.nih.gov/8009356/}, note = {Source identifier: 8009356} }