@unpublished{088_PREPRINT,
 Author = {Tommy Etling and Roland Herzog and Estefan\'{i}a Loayza and Gerd Wachsmuth},
 Note = {Preprint SPP1962-088},
 Title = {First and Second Order Shape Optimization Based on Restricted Mesh Deformations},
 Month = {10},
 Year = {2018}}