[6] Golod, E. S.: 
Some problems of Burnside type. Twelve Papers on Algebra, Algebraic Geometry and Topology American Mathematical Society Translations: Series 2, Vol. 84. AMS, Providence (1969), 83-88. 
DOI 10.1090/trans2/084 | 
MR 0238880 | 
Zbl 0206.32402