[1] J. A. Beachy: A generalization of injectivity. Pacif. J. Math. 41 (1972), 313-327. DOI 10.2140/pjm.1972.41.313 | MR 0313317 | Zbl 0235.16018

[2] L. Bican: QF-3' modules and rings. Comment. Math. Univ. Carolinae 14 (1973), 295-303. MR 0401825 | Zbl 0259.16005

[3] L. Bican: Preradicals and injectivity. Pacif. J. Math. 56 (1975), 367 - 372. DOI 10.2140/pjm.1975.56.367 | MR 0399164 | Zbl 0305.16018

[4] L. Bican: Corational extensions and pseudo-projective modules. Acta Math. Acad. Sci. Hungar. 28 (1976), 5-11. DOI 10.1007/BF01902486 | MR 0424870 | Zbl 0339.16006

[5] L. Bican: General concept of injectivity. Universale Algebren und Theorie der Radikale, Akademie Verlag, Berlin, 1976, 37-40. MR 0453811 | Zbl 0334.16005

[6] L. Bican P. Jambor T. Kepka F. Němec: Hereditary and cohereditary preradicals. Czech. Math. J. 26 (1976), 192-206. MR 0414611

[7] L. Bican P. Jambor T. Kepka P. Němec: Pseudoprojective modules. Math. Slovaca 29 (1979), 106-115. MR 0578283

[8] L. Bican T. Kepka P. Němec: Rings, modules and preradicals. Lecture notes in pure and applied mathematics. Vol. 75, Marcel Dekker Inc., New York and Basel (1982). MR 0655412

[9] L. Bican J. Jirásko: Generalized pseudoinjectivity. (to appear). MR 1008340

[10] J. P. Jans: Torsion asociated with duality. Tôhoku Math. J. 24 (1972), 449-452. DOI 10.2748/tmj/1178241484 | MR 0332880

[11] J. Jirásko: Pseudohereditary and pseudocohereditary preradicals. Comment. Math. Univ. Carolinae 20 (1979), 317-327. MR 0539560

[12] J. Jirásko: Preradicals and generalizations of QF-3' modules. Comment. Math. Univ. Carolinae 23 (1982), 25-40. MR 0653349 | Zbl 0467.16024

[13] J. Jirásko: Preradicals and generalizations of QF-3' modules II. Comment. Math. Univ. Carolinae 23 (1982), 269-284. MR 0664972 | Zbl 0467.16024

[14] H. Jirásková J. Jirásko: Generalized projectivity. Czech. Math. J. 28 (1978), 632-646. MR 0506436

[15] A. I. Kašu: When a radical associated with module is torsion. (Russian), Mat. Zametki 16 (1974), 41-48. MR 0357469

[16] Y. Kurata H. Katayama: On a generalization of QF-3' rings. Osaka J. Math. 13 (1976), 407-418. MR 0409544

[17] F. F. Mbuntum, K, Varadarajan: Half-exact preradicals. Comm. Algebra 5 (1977), 555-590. DOI 10.1080/00927877708822182 | MR 0437580

[18] K. M. Rangaswamy: Codivisible modules. Comm. Algebra 2 (1974), 475-489. DOI 10.1080/00927877408822022 | MR 0352174 | Zbl 0303.16012

[19] G. M. Zuckerman: On pseudoinjective modules and self-pseudoinjective rings. (Russian), Mat. Zametki 7 (1970), 369-380. MR 0387348