Before revision:  This analysis also indicates that an age-dependent duplication move appears to be necessary for reproducing the basic network topological observables together with the age correlation between interacting nodes visible in empirical data  .
After revision:  This analysis also indicates that an age-dependent duplication move appears to be necessary for reproducing the basic network topological observables together with the age correlation between interacting nodes visible in empirical data . We also discuss the possibility of nontrivial joint partition/topology observables .