Publications for:

pest = Phelipanche aegyptiaca (weed)
crop = Clover (Trifolium)

found 2 publications:

2000

Small broomrape (Orobanche minor) and Egyptian Broomrape (Orobanche aegyptiaca) parasitization of red clover (Trifolium pratense)
Weed Technology (2000) 14 (2), 312-320
publishers website - pestinfo wiki

1994

The effects of flax (Linum usitatissimum L.) and other crops as trap and catch crops for control of Egyptian broomrape (Orobanche aegyptiaca Pers.)
Weed Research (1994) 34 (1), 37-44
publishers website - pestinfo wiki