[1] Conti G., Pejsachowicz J.: 
Fixed point theorem for multivalued weighted maps. Ann. Mat. Pura Appl. 126, 4 (1980), 319-342. 
MR 0612366[2] Darbo G.: 
Teoria dell’omologia in una categoria di maps plurivalenti ponderate. Rend. Sem. Mat. della Univ. di Padova 28 (1958), 188-224. 
MR 0105093[3] Darbo G.: 
Sulle coincidenze di mappe ponderate. Rend. Sem. Mat. Univ. di Padova 29 (1959), 256-270. 
MR 0126284 | 
Zbl 0089.39001[4] Darbo G.: 
Estensione alle mappe del teorema Lefshetz sui punti fissi. Rend. Sem. Mat. Univ. Padova 31 (1.961), 46-57. 
MR 0137119[5] Dugundji J., Granas G.: 
Fixed Point Theory. Monograf. Mat. 61, PWN, Warszawa, 1982. 
Zbl 0483.47038[6] Górniewicz L., Ślosarski M.: 
Topological essentiality and differential inclusions. Bull. Austral. Math. Soc. 45 (1992), 177-193. 
MR 1155476 | 
Zbl 0755.34013[7] Górniewicz L.: 
Topological Fixed Point Theory of Multivalued Mappings. Kluwer Acad. Pub., Vol. 495, 1999. 
MR 1748378[8] Granas A.: 
The theory of compact vector field and some of its applications. Dissertationes Math. (Warszawa) 30 (1962). 
MR 0149253[9] Jerrard R.: 
Homology with multivalued functions applied to fixed points. Trans. AMS 213 (1975), 407-428. 
MR 0380778[10] Jodko-Narkiewicz S.: Topological degree of multivalued weighted mappings. UMK Toruń 1989 (Thesis in Polish).
[11] Miklaszewski D.: Fixed points of symmetric product mappings. UMK Toruń 1991 (Thesis in Polish).
[12] Pejsachowicz J.: 
Relation between the homotopy and the homology theory of weighted mappings. Bolletino U.M.I. 15-B (1978), 285-302. 
MR 0515493 | 
Zbl 0391.55009[13] Pejsachowicz J.: 
The homotopy theory of weighted mappings. Bolletino U.M.I. 14-B (1977), 702-720. 
MR 0500939 | 
Zbl 0452.55006[14] Skiba R.: 
On the Lefschetz fixed point theorem for multivalued weighted mappings. Acta Univ. Palacki. Olomuc., Fac. rer. nat., Math. 40 (2001), 201-214. 
MR 1904696 | 
Zbl 1058.47048[15] Ślosarski M.: Certain applications of topological essentiality and charakterization of the set of fixed points to differential inclusions. UMK Toruń 1993 (Thesis in Polish).