Time series prediction with RNNs • /r/MachineLearning

I am currently working on a project that uses LSTMs/GRUs to predict the a time series as described in here(LSTM For Regression Using the Window Method) and here. Does anybody have scientific sources for this method by any chance? I can not seem to find any paper that uses this approach and I am hesitant to use it because of that. Here is a paper that mentiones the sliding time window approach (but not for LSTMs). Why do you need a paper?