Peter H. Schmitt. The Elementary Theory of Torsionfree Abelian Groups With a Predicate Specifying a Subgroup. Math. Log. Q., 28(22-24):323-329, 1982. [doi]
@article{Schmitt82-1,
title = {The Elementary Theory of Torsionfree Abelian Groups With a Predicate Specifying a Subgroup},
author = {Peter H. Schmitt},
year = {1982},
doi = {10.1002/malq.19820282203},
url = {http://dx.doi.org/10.1002/malq.19820282203},
researchr = {https://researchr.org/publication/Schmitt82-1},
cites = {0},
citedby = {0},
journal = {Math. Log. Q.},
volume = {28},
number = {22-24},
pages = {323-329},
}