//-->
The economics of technological progress : proceedings by a conference held by the European Production Study Group in Umcå, Sweden, 23.-25.8.1978, including a bibliography on the subject
Puu, Tönu, (1980)
The allocation of road capital in two-dimensional space : a continuous approach
Puu, Tönu, (1979)
Om samband mellan kort och l°ang ränta
Puu, Tönu, (1993)