These two papers, assembled by Dr. Rogaev and his team are an interesting and valuable look at the recent forensic DNA analysis of the remains of the two bodies discovered at the Ekaterinburg site in 2004.   These DNA analyses identify without question the two as the remains of Tsesarevich Alexis Nikolaevich and one of his sisters, most probably that of Grand Duchess Maria Nikolaevna. 

Rogaev: Genomic identification in the historical case of the Nicholas II royal family

Rogaev: Supplemental Information