@inbook {1494, title = {Hydrogels with 3D Gradient of Mechanical Properties}, booktitle = {Hydrogels: Synthesis, Characterization and Applications}, number = {Biochemistry Research Trends}, year = {2012}, edition = {online edition}, chapter = {Hydrogels with 3D Gradient of Mechanical Properties }, keywords = {Bioengineering}, author = {G. Orsi and Carta, V and G. Vozzi} }