Inverted Row, Inverted Pull Up, or Supine Row. The name is not really important, but if you're struggling with pull ups … | Pull ups, Best pull up bar, Inverted row
How to Do an Inverted Row (Bodyweight Rows): Ultimate Guide
How to Use a Smith machine to practice inverted pull ups « Weights :: WonderHowTo
How To Do Horizontal Pullup/Inverted Row Correctly & Safely - The White Coat Trainer