U. Schreiner-Mohr, F. Dausinger, and H. Hügel. Proceedings of the Laser Materials Processing Symposium ICALEO'91, LIA Vol. 74 / SPIE Proceedings. Vol. 1722, page 263 -272. Orlando, FL, Laser Institute of America (LIA) /Society of Photo-Optical Instrumentation Engineers (SPIE), (1992)
U. Schreiner-Mohr, F. Dausinger, and H. Hügel. Proceedings of the Laser Materials Processing Symposium ICALEO'91, LIA Vol. 74 / SPIE Proceedings. Vol. 1722, page 263 -272. Orlando, FL, Laser Institute of America (LIA) /Society of Photo-Optical Instrumentation Engineers (SPIE), (1992)