On Waring's problem for six cubes and higher powers
It is shown that each sufficiently large even natural number \(n\equiv 1\pmod 5\) can be represented by \[ n= x_1^3+ x_2^3+\cdots+ x_6^3+ u^4+ v^9, \] where \(x_1, x_2,\dots, x_6\), \(u,v\) are nonnegative integers.
scientific article; zbMATH DE number 1777274