The next two results show that totally free matroids cannot occur sporadically in a minor-closed class.
In the first years they had corresponded quite intensely, but later more sporadically.
In contrast, the father appears as a knight in shining armor, returning home sporadically from exciting events outside.
This suggests that a regime of increasing accommodation was required to form well-developed reefs, though reefs also occur sporadically in highstand systems tract settings.
It is not just an ideal, but a very real possibility, and one which is sporadically fulfilled.
Research on this concept has continued sporadically since that time.
Support from different sources was highly valued but was reported to be provided inconsistently and sporadically.
This had been spoken and written about sporadically over previous decades but sprang into prominence in the 1950s.
