https://www.ingenieriabiomedica.org/post/2015/03/08/ekso-bionics-la-compa%C3%B1%C3%ADa-que-quiere-acabar-con-las-sillas-de-ruedas

https://www.ingenieriabiomedica.org/post/2014/12/06/la-nueva-silla-de-stephen-hawking