Óscar Domínguez, Sergey Tikhonov, “Function Spaces of Logarithmic Smoothness: Embeddings and Characterizations”, Memoirs of the AMS, 282:1393 (2023)
S. Artamonov, V. Runovski, J. Schmeisser, “Besov spaces with generalized smoothness and summability of multiple Fourier series”, Journal of Approximation Theory, 284 (2022), 105822
J. S. Neves, B. Opic, “Optimal local embeddings of Besov spaces involving only slowly varying smoothness”, J. Approx. Theory, 254 (2020), UNSP 105393