Add punctuation: Around 1980 Dynkin interpreted and vastly generalized an identity which had first come up in the context of quantum field theory
A: Around 1980 Dynkin interpreted and vastly generalized an identity which had first come up in the context of quantum field theory.

Add punctuation: In a large summary article in Current Pharmaceutical Biotechnology 2 the authors assess a long list of illnesses where GLA has an amazing effect These include inflammatory conditions such as rheumatoid arthritis autoimmune diseases and cancers
A: In a large summary article in Current Pharmaceutical Biotechnology (2), the authors assess a long list of illnesses where GLA has an amazing effect. These include inflammatory conditions such as rheumatoid arthritis, autoimmune diseases, and cancers.

Add punctuation: Where a layer of snow previously protected the food found by reindeer and muskoxen during the winter the summers melt water has now caused a crust of ice to form over the vegetation
A:
Where a layer of snow previously protected the food found by reindeer and musk-oxen during the winter, the summer's melt water has now caused a crust of ice to form over the vegetation.