Tables containing light curves of all variables discussed in this paper as well as tables with BV photometry presented in Figs. 1 (click here) and 2 (click here) are published by A&A at the Centre de Données de Strasburg, where they are available in the electronic form: See the Editorial in A&A 1993, Vol. 280, page E1. We have also submitted the V-filter ``template" image of the monitored field. This image can be used for identification of all variables discussed in this paper as well as for identification of all stars for which we provide BV photometry. A table containing detailed log of all observations used in this paper is also available from A&A.