Application of time-delay neural and recurrent neural networks for the identification of a hingeless helicopter blade flapping and torsion motions - Marques, Flavio Donizeti; Souza, Luciane de Fátima Rodrigues de; Rebolho, Daniela Cristina; Caporali, Alexandre Simião; Belo, Eduardo Morgado; Ortolan, Rodrigo Lício (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2005)