SIMBAD references

Three neclected or unusual eclipsing binaries are presented. WY Leo has a period of about 5 days, so the mainminimum will not be seen in 2007. Dates for observation of the halfminima are given. KN Per is a former RR Lyr - star, now he is a eclipsing binary of type W UMa. The collected minima are not close together, so more observations are needed. BM Cas is a long-period eclipsing binary, his period is more than 197 days. Only parts of the minima can be observed on every obser- vation, more dates for 2007 and 2008 are given.