Neumann Peter M

Publications in Math-Net.Ru

1. On varieties generated by a finitely generated group
   
   Matematika, 12:4 (1968),  50–79
2. Schreier varieties of groups
   
   Matematika, 12:4 (1968),  42–49
3. On word subgroups of free groups
   
   Matematika, 12:4 (1968),  25–41