Cadarso Morga, Luis and MarĂ­n Gracia, Angel (2012). Integration of Timetable Planning and Rolling Stock in Rapid Transit Networks. "Annals of Operations Research", v. 199 (n. 1); pp. 113-135. ISSN 0254-5330. https://doi.org/10.1007/s10479-011-0978-0.