What is the algorithm behind LSBoost from fitensemble function?

 Is it one of the 3 algorithms proposed in article 'Boosted methods for Regression' (http://link.springer.com/article/10.1023/A:1013685603443)?

Answer 1

[Dana Cosman]

Found it: is the gradient boostig strategy applied for least squares, from Friedman

(source: https://statweb.stanford.edu/~jhf/ftp/trebst.pdf)