Hamar József; Borbély György: Assessment of the heterotrophic activity of sediment and water in the Tisza and its tributaries = A heterotróf aktivitás becslése a Tisza és mellékvizei üledékében és vizében. In: Tiscia 16. pp. 83-92. (1981)
Bancsi István; Hamar József: Data on the Rotatoria and Zooflagellata fauna of the sediment in the Tisza and its tributaries = Adatok a Tisza és mellékvizei üledékének Rotatoraia és Zooflagellata faunájához. In: Tiscia 16. pp. 155-159. (1981)
Hamar József: Some new zooflagellates from Hungary. In: Tiscia 14. pp. 147-162. (1979)
Hamar József: Zooflagellates from the water storage area of Kisköre (Hungary). In: Tiscia 14. pp. 139-145. (1979)
Ádámosi Margit; Végvári Péter; B. Tóth Mária; Hamar József; Bancsi István; Ferencz Magdolna: Limnological investigations in the longitudinal section of the river Tisza. In: Tiscia 13. pp. 99-140. (1978)
Hamar József: Data on knowledge of the blue-green alga Anabaenopsis raciborskii Wolosz. In: Tiscia 12. pp. 17-20. (1977)
Hamar József: Data on the summer algal flora of dead-arms in the vicinity of Tiszafüred. In: Tiscia 12. pp. 21-36. (1977)
Hamar József: About the algae of the Kisköre River Barrage and environs. In: Tiscia 11. pp. 45-58. (1976)
Hamar József: Bacteriological and algological investigation of the bay at Abádszalók (Kisköre Reservoir). In: Tiscia 11. pp. 85-92. (1976)
Hamar József: Data to the bacteriological and algological conditions of the region of Kisköre River Barrage. In: Tiscia 11. pp. 41-44. (1976)
Hamar József: Data to the hydrobiology of the middle and lower Tisza river region. In: Tiscia 11. pp. 67-75. (1976)
Hamar József; Bancsi István: Diurnal plankton investigation in an experimental area, in the reach of the Kisköre River Barrage. In: Tiscia 11. pp. 125-128. (1976)
Hamar József: Investigation of bacterio- and phytoplankton in the experimental area of Abádszalók at the Kisköre River Barrage. In: Tiscia 11. pp. 111-114. (1976)
B. Tóth Mária; Hamar József: The part of water vegetation in eutrophication in an experimental area at the Kisköre River Barrage. In: Tiscia 11. pp. 115-118. (1976)
Hamar József: Data on the knowledge of zooflagellata of the river Tisza. In: Tiscia 8. pp. 33-40. (1973)
Hamar József: Effect of the waste-water of sogar-works on natural history of the river Zagyva. In: Tiscia 6. pp. 109-128. (1971)
Hamar József: Algological data on the upper reach of river Tisa. In: The Upper Tisa valley : preparatory proposal for Ramsar site designation and an ecological background Hungarian, Romanian, Slovakian and Ukrainian co-operation 4. pp. 355-360. (1999)
Sárkány-Kiss Endre; Hamar József; Mihailescu Nicolae: Description of sampling sites along the Upper Tisa. In: The Upper Tisa valley : preparatory proposal for Ramsar site designation and an ecological background Hungarian, Romanian, Slovakian and Ukrainian co-operation 4. pp. 127-133. (1999)
Nagy-Tóth Ferenc; Barna Adriana; Hamar József: A short account on the algal flora of the river Someş/Szamos (Transylvania). In: The Somes/Szamos river valley : a study of the geography, hydrobiology and ecology of the river system and its environment 3. pp. 133-142. (1999)
Hamar József; Zsuga Katalin; Fodor Alpár; Ponta Michaela: Chemical characteristics of the water and sediment of the Criş/Körös river system. In: The Cris/Körös rivers' valleys : a study of the geography, hydrobiology and ecology of the river system and its environment 2. pp. 103-114. (1997)
Hamar József: Algological studies of the Maros (Mureş) river. In: The Maros/Mureş river valley : a study of the geography, hydrobiology and ecology of the river and its environment 1. pp. 149-163. (1995)