A. Schinzel, G. Szekeres |
221-229
No further details |
L. C. Hsu |
230-233
No further details |
L. Rédei |
234-237
No further details |
L. Rédei |
238-244
No further details |
K. Tandori |
245-251
No further details |
Gy. Pollak |
252-268
No further details |
269-276
No further details |