1. 56Gre: P. Greenfield and P. A. Beck, “Intermediate Phases in Binary Systems of Certain Transition Elements”,Trans. AIME, 206, 265–276 (1956). (Equi Diagram; Experimental)
2. 60Kna: A. G. Knapton, “Constitution, Structure and Physical Properties of Nb and Ta Alloys”,J. Less-Common Met., 2, 113–124 (1960). (Equi Diagram; Experimental)
3. 61Dwi: A. E. Dwight,Columbium Metallurgy, Proceedings TMS-AIME Conf. 1961, Vol 10, 384–406 (1961). (Equi Diagram; Experimental)
4. 61Sav: E. M. Savitskii, V. V. Baron, and A. N. Kotinskayo, “Composition Diagram of System Nb-Pb”,Zh. Neorg. Khim., 6, 2603–2605 (1961). (Equi Diagram; Experimental; Indicates presence of a phase diagram.)
5. 62Kud: E. Kudielka-Artner and B. B. Argent, “Magnetic and Other Properties of Some Binary Pd Alloys”,Proc. Phys. Soc. London, 80, 1143–1148 (1962). (Equi Diagram; Experimental)