1. Jordan EW, Holben T, Kim J, Restner U, Hallett G (2011) Roadheader Excavations in Hard Rock—a case history from Midtown Manhattan. 2011 Rapid Excavation and Tunneling Conference Proceedings, pp. 765–795
2. Ergin H, Acaroglu O (2007) The effect of machine design parameters on the stability of a roadheader. Tunn Undergr Space Technol 22:80–89
3. Tatiya RR (2005) Surface and underground excavations—methods, techniques and equipment. Taylor & Francis Group, LLC, London
4. Gehring KH (1989) A cutting comparison. Tunn Tunn, pp. 27–30
5. Bilgin N, Seyrek T, Erdinc E, Shahriar K (1990) Roadheaders clean valuable tips for Istanbul Metro. Tunn Tunn (October), pp. 29–32