What do you want ? Full references ?
Here they are:
Eldredge and Gould (1972):
Punctuated Equilibria: An alternative to phyletic gradualism
In T J Schopf (Ed) Models in Paleobiology pp82-115
Freeman, Cooper & Co, San Francisco
Cheetham A (1986):
Tempo of evolution in a Neogene bryozoan: rates of morphological change within and across species boundaries.
Paleobiology 12:199-202
The Eldredge and Gould paper is available online, free of charge. The Cheetham paper costs money.