I. Western participant(s)

1) Family names: Gonzalez Llorente
2) Given Name:   Jose
3) Degree: Doctor in Mathematics
4) Affiliation: Department of Mathematics,
                Universidad Autonoma de Madrid
                Facultad de Ciencias
                28049     MADRID, Spain

             and

             Departament de Matematiques
             Facultat de Ciencies
             Universitat Autonoma de Barcelona
             08193   BELLATERRA
             BARCELONA, Spain

5) position:     associate professor
6) mailing address

Department of Mathematics,
Universidad Autonoma de Madrid
Facultad de Ciencias
28049     MADRID, Spain

7) current e-mail adress: jose.gonzalez@uam.es
8) phone number: 34-1-3975255 (Madrid, Spain)
9) Fax:   34-1-3974889 (Madrid, Spain)


    II. Russian participant(s)

       1) family name            Yakubovich
       2) given name             Dmitry
       3) patronimic             Vladimirovich
       4) degree, title(s)       Candidate of Math. Sciences
       5) affiliation            Division of Math. Analysis,
                                 Dept. of Mathematics and Mechanics
                                 St. Petersburg Univ.

       6) position               docent
       7) mailing address        Dmitry Yakubovich
                                 Division of Mathematical Analysis
                                 Dept. of Mathemetics and Mechanics
                                 St. Petersburg State Univ.
                                 Bibliotechnaya pl., 2
                                 Stary Peterhof, 198904
                                 St. Petersburg, Russia
       8) e-mail address         dm@yakub.niimm.spb.su
       9) phone number           (812) 4287063
      10) FAX number             (812) 4283039


    III. Subject of joint work (a few phrases)

Some recent results on the boundary behaviour of subharmonic functions
in the unit ball or the upper half-space can be generalized in the sense
that they are also valid when the upper half-space and usual subharmonic
functions are replaced by a Brelot metric space and its corresponding
subharmonic cone . It can be shown that the key requirements needed to
get the same results in this abstract setting are: i) the appropiate
version of Littlewood's Theorem on subharmonic functions. ii) certain
Carleson condition on the behaviour of harmonic measure.

  For instance, this general approach has direct applications to
subsolutions of some elliptic differential operators in euclidean
domains.

    IV. Desired duration   8  days in the period
        from June 5 to June 30, 1997.