1. Monograph on narrow-gap welding technology;Malim;Weld. Res. Counc. Bull.,1987
2. Characteristics of the narrow-gap TIG-are welded joints of 10Ni-8Co steel for the pressure hull of deep submersible;Satoh;Mitsubishi Heavy Industries Tech. Rev.,1974
3. Narrow groove gas shield tungsten are welding process with hot wire filler addition in vertical and horizontal position for stainless steel pressure vessel;Ito,1981
4. Narrow gap welding of heavy gauge steel nuclear components;Manzoli;Welding Int.,1989
5. Narrow gap orbital welding;Hill,1978