Positivity and stability of the solutions of Caputo fractional linear time-invariant systems of any order with internal point delays Autoría: De La Sen, M. Año: 2011 Revista: Abstract and Applied Analysis Volumen: 2011, art. no. 161246 Más información http://www.scopus.com/inward/record.url?eid=2-s2.0-79959191775&partnerID=40&md5=8a43c77d6b672eed80b949a41cf8ed5d