Ancochea Bermudez, José María, y Otto Rutwig Campoamor. «On a Nilpotent Lie Superalgebra Which Generalizes Qn». Revista Matemática Complutense 15, no. 1 (enero 1, 2002): 131–146. https://doi.org/10.5209/rev_REMA.2002.v15.n1.16953.