Recursion relations for Hylleraas three-electron integral
  Recursion relations for Hylleraas three-electron integral are obtained in a closed form by using integration by parts identities. Numerically fast and well stable algorithm for the calculation of the integral with high powers of inter-electronic coordinates is presented. 
Krzysztof Pachucki, Mariusz Puchalski, Ettore Remiddi