Belali, Z., Anvariyeh, S.M. and Mirvakili, S. 2011. Free and cyclic canonical $\bf{(m,n)-}$ ary hypermodules. Tamkang Journal of Mathematics. 42, 1 (Mar. 2011), 105–118. DOI:https://doi.org/10.5556/j.tkjm.42.2011.870.