csv-to-apkg reads your comma delimited data. It takes the first column and treats it as the front of the card. The remaining columns are the back of the card.

Abstract: Optimizing the layout of sparse planar arrays constrained by minimum element spacing to reduce the peak sidelobe level (PSLL) is a difficult and challenging task in engineering applications.

Abstract: The problem of designing a fast and accurate image reconstruction algorithm for 3-D near-field microwave imaging with sparse multiple-input multiple-output (MIMO) arrays is discussed in this ...

For txt, I let it stay similar format to the msg tool. That means one lang one txt file. For csv, I put all the languages into one file, with the msg entry name, its guid, and attributes. I think this ...