YURTDIŞI YAYINLARI

1- Z.Aslan, M.Gören, E.Derman, 1981, "Photoelectric Light Curves of CK Bootis, HD128141", IAU-IBVS No: 2043. *

2- E.Derman, N.Yylmaz, S.Engin, Z.Aslan, C.Aydyn, Z.Tüfekçio?lu,1982, "Times Of Minima For Eight Eclipsing Binaries". IAU-IBVS No: 2159. *

3- T.Özkan, E.Derman 1982, "The Longitudial Distrubution of Sunspots and RS Cvn Starspot Model", Astrophysics and Space Science, 87, 211-216. *

4- E.Derman, 1982 , "Spectroscopic Analysis of a Andromedae", ASS 88, 135- 158. *

5- Ü.Kızıloğlu, E.Derman, H.Ögelman, F.Tokdemir, 1983, "Ultraviolet Observations of AR Lacertae, AA 123, 17-21. *

6- E.Derman, Ü.Kızıloğlu, F.Tokdemir, 1986, "The Mg II Light Curve of AR Lac", IAU-IBVS No : 2881.*

7- Z.Aslan, E.Derman, 1987, "Photoelectric Observations of CK Bootis", AAS 66, 281-302.. *

8- Z.Aslan, E.Derman, S.Engin and N.Yılmaz, 1987, "BV Photometry of b Lyrae in 1979 and 1981 ", AAS 71, 597-601. *

9- O.Demircan, E.Derman, S. Selam, 1988," The First Photoelectric Light Curve of V456 Ophiuchi", IAU-IBVS No:3237. *

10- Z. Aslan, C. Aydın, Z. Tunca, O. Demircan, E.Derman , O. Gölbaşı and A. Marşoğlu, 1989, "Site Testing for an Optical Observatory in Turkey", AA 208, 385. *

11- E.Derman, A.Akalın, O.Demircan, 1989, "1987 Light Curves of BX Andromedae", IAU-IBVS No:3325. *

12- O.Demircan, F. F. Özeren, E.Derman, 1989, "UBV Photometry of HR 1176", ASS 162, 337-340. *

13- E.Derman, O.Demircan, Ferhat F.Özeren, 1989, "On the Period of HR1362", PASP 101, 677. *

14- O.Demircan, E.Derman, C.Aydın, A.Akalın, 1989,"Photometric Variation of Zeta Aurigae", IAU-IBVS No:3342. *

15- E.Derman, O.Demircan, S.Engin, A. Akalın, 1989, "Photometric Variation of Delta Sagittae", IAU-ISVS No:3343. *


16 - O.Demircan, E.Derman, 1989, "1988 Light Curve of RX Herculis", IAU-IBVS No:3403 *

17- E.Derman, A.Akalın, O.Demircan, 1989, "1989 Light Curves of BH Virginis", IAU-1BVS No:3404. *

18- O.Demircan, E.Derman, A.Akalın,1990, "Atmospheric Eclipse of d Sge", IAU-IBVS No:3486. *

19- E.Derman, O. Demircan, Z.Müyesseroğlu, 1990, "AW UMa is in Active Phase of Mass Transfer",IAU-IBVS No:3540. *

20- E.Derman, O.Demircan, G.Kahraman, 1990, "UBV Photometry of the RS CVn-type Binary HK Lacertae", AAS 86, 421-428. *

21- O.Demircan, E.Derman, F.Ekmekçi, 1990, "1987-1989 UBV Photometry of 00 Aquilae", IAU-IBVS No:3551. *

22- O.Demircan, E.Derman, A. Akalın, 1991, "A Period Analysis of AH Virginis", AJ 101, 201 *

23- E.Derman , O. Demircan, H. Dündar, 1991, "1982-1990 UBV observations of AM Leonis", IAU-IBVS No: 3630. *

24-E.Derman , O. Demircan, S.Selam, 1991, "Light Curve and Period Variations of W UMa System LS Delphini", AAS 90, 301. *

25- O.Demircan, S.Selam, E.Derman, 1991, "1990 Photometry of a small amplitude W UMa system LS Delphini", ASS 186, 57-66. *

26- O.Demircan, E.Derman, G.Kahraman, 1992, "UBV Photometry of Chromospherically Active Binary Star: V350 Lacertae", ASS, 188, 151-158. *
27- E.Derman, O.Demircan, 1992, "UBV Photometry of AW Pegasi", ASS, 189, 309-325. *

28- E.Derman, O.Demircan,1992, "A period study of GK Cephei", AJ, 103, 599 *
29- O.Demircan, E.Derman, 1992, "A period study of AM Leonis", AJ, 103, 593. *

30- Z.Aslan,E.Derman, A. Akalın, T.Özdemir, 1992, "Long Term Photometric Variation In DH Leo", A&A, 257, 580. *

31- E.Derman, O.Demircan, 1992, "A period study of V502 Ophiuchus", AJ, 103, 1658-1661. *

32- O.Demircan, E.Derman, 1992, "UBV photometry of a contact binary AM Leo", AAS, 95, 213-221. *

33- O.Demircan, E.Derman, Z. Müyesseroğlu, 1992, "A period study of AW UMa", AA, 263, 165-171.

34- O.Demircan, A. Akalın, E.Derman, 1993,"The light curve and period variation of BX Andromedae", AAS, 98, 583-588. *

35- E.Derman. O.Demircan, A.Akalın, 1993, "UBV photometry of BX Andromedae", Ap&SS, 205, 327-341. *

36- O.Demircan, E.Derman, A.Akalın, S.Selam, Z.Müyesseroğlu, 1994, "UBV photometry of the contact binary AB Andromedae", A&AS, 106, 373-376. *

37- O.Demircan, E.Derman, A.Akalın, S.Selam, Z.Müyesseroğlu, 1994, "Light Curve and period changes of AB Andromedae", M.N.R.A.S., 267, 19-25. *

38- O.Demircan, Z.Müyesseroğlu, S.Selam, E.Derman, A.Akalın, 1995, "The light and period variation of CV Cygni", A&A, 297, 364. *

39- O.Demircan, E.Derman, A.Akalın, S.Selam, Z.Müyesseroğlu, 1995, "UBV the light curve and period changes of XZ Andromedae", A&AS, 114, 167*

40- A.Akalın, E.Derman, 1997, "UBV Photometry and Period Variations of V839 Ophiuchi" A&AS, 125, 407*

41- E.Derman, R.Kalcı, 2003, "Photoelectric Minimum Times of Some Eclipsing Binary Stars" IAU-IBVS No: 5439*

42- R. Kalcı, E.Derman, 2003, "CK Bootis: a W UMa system with a small mass ratio" AN, 326, 342*