Roar Nålsund

发表

Railway Ballast Characteristics, Selection Criteria and Performance

Roar Nålsund, R. Nålsund, 2014 .

Effect of Grading on Degradation of Crushed-Rock Railway Ballast and on Permanent Axial Deformation

Roar Nålsund, R. Nålsund, 2010 .