CLFormer: A Lightweight Transformer Based on Convolutional Embedding and Linear Self-Attention With Strong Robustness for Bearing Fault Diagnosis Under Limited Sample Conditions. - Hairui Fang; Jin Deng; Yaoxu Bai; Bo Feng 004; Sheng Li; Siyu Shao; Dongsheng Chen (IEEE Trans. Instrum. Meas., 2022)