# zbMATH — the first resource for mathematics

Some new RBIBDs with block size 5 and PBDs with block sizes $$\equiv$$ 1 mod 5. (English) Zbl 0881.05019
This is an important paper in which the authors complete the determination of all $$(v,5,1)$$ RBIBDs, with the exception of only six values. Various other designs are also constructed, including 14 new $$(v,6,1)$$ BIBDs.

##### MSC:
 05B05 Combinatorial aspects of block designs
RBIBDs; BIBDs