Complex sentence: Afterwards, Einstein presented a variant of these ideas in a letter to Erwin Schrödinger, which is the version that is presented here, with a more modern notation akin to Bohm's take on EPR.
Split into simpler sentences: Afterwards, Einstein presented a variant of these ideas in a letter to Erwin Schrödinger, which is the version that is presented here. The state and notation used here are more modern, and akin to Bohm's take on EPR.