@article{article80194880,
title   = {Commutative power-associative algebras of nilindex four},
author = {Fernández, Juan Carlos Gutiérrez and Grichkov, Alexandre and Montoya, Mary L. R. and Murakami, Lúcia Satie Ikemoto},
year = {2011},
doi = {10.1080/00927872.2010.496751},
journal   = {Communications in Algebra}
}