1 INTRODUCTION
2 METHOD & MODELS
2.1 Spectral synthesis modeling
2.2 Spectral signatures
2.3 Magnification distribution
2.4 Population III galaxy simulations
2.5 Telescopes and survey parameters
2.6 Minimum comoving density for the detection of lensed Pop III galaxies
2.7 Detection probability
3 RESULTS
3.1 The detectability of simulated galaxies
3.2 The impact of the Pop III stellar IMF
3.3 The impact of the Pop III galaxy age
3.4 The redshift dependence
4 DISCUSSION
4.1 Comparison to cluster lensing surveys
4.2 Comparison to previous studies
4.3 The impact of variations in $\mathcal{L}_{\mathrm{HeII}\,1640}$ and $\mathcal{L}_{\mathrm{UV}\,1500}$
4.4 Simulation predictions vs. reality
4.5 Other spectroscopic probes
4.6 Spectroscopic follow-up
5 CONCLUSIONS