Evans W. D. ., Karadzhov G. E. y Edmunds D. E. (2007). Sharp Estimates of the Embedding Constants for Besov Spaces bs p,q, 0 < p < 1. Revista Matemática Complutense, 20(2), 445-462. https://doi.org/10.5209/rev_REMA.2007.v20.n2.16505