Can.J.Phys. 50, 34 (1972)

R.C.Barber, R.L.Bishop, J.O.Meredith, F.C.G.Southon, P.Williams, H.E.Duckworth, P.Van Rookhuyzen

Precise Atomic-Mass Differences in the Region 59 < Z < 69

ATOMIC MASSES ^{142,144,146,148,150}Nd, ¹⁵⁰Sm, ^{144,148,150,152,154}Sm, ¹⁵⁴Gd, ^{152,154,156,158,160}Gd, ¹⁶⁰Dy, ^{156,158,160,162,164}Dy, ^{162,164,166,168,170}Er, ¹⁴¹Pr, ^143,145,147Nd, ^147,149Sm, ^151,153Eu, ^155,157Gd, ¹⁵⁹Tb, ^161,163Dy, ¹⁶⁵Ho, ¹⁶⁷Er, ¹⁶⁹Tm, ¹⁶⁷Er; measured mass differences.