Orthogonal double covers of K<sub>n, n</sub> by small graphs.

Ramadan El-Shanawany Hans-Dietrich O. F. Gronau Martin Grüttmüller Orthogonal double covers of K<sub>n, n</sub> by small graphs. 47-63 2004 138 Discrete Applied Mathematics 1-2 http://dx.doi.org/10.1016/S0166-218X(03)00269-5 db/journals/dam/dam138.html#El-ShanawanyGG04